diff --git a/.natnum_source.bst b/.natnum_source.bst
index cbb65e7a..b54b0d61 100644
--- a/.natnum_source.bst
+++ b/.natnum_source.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "[ERROR_FORMAT_ARTICLE_CROSSREF_1]" cite$ * "[ERROR_FORMAT_ARTICLE_CROSSREF_2]" * crossref * warning$
             ""
         }{
-            "[IN_OBJECT]{" journal * "\/}" *
+            "[IN_OBJECT]{" journal * "}" *
         } if$
     }{
         "[IN_OBJECT]" key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "[ERROR_FORMAT_BOOK_CROSSREF_3]" cite$ * "[ERROR_FORMAT_BOOK_CROSSREF_2]" * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "[ERROR_FORMAT_INCOLL_INPROC_CROSSREF_1]" cite$ * "[ERROR_FORMAT_INCOLL_INPROC_CROSSREF_2]" * crossref * warning$
                 ""
             }{
-                "[IN_OBJECT]{" booktitle * "\/}" *
+                "[IN_OBJECT]{" booktitle * "}" *
             } if$
         }{
             "[IN_OBJECT]" key *
@@ -925,12 +931,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -939,7 +950,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ
diff --git a/elsartnum.bst b/elsartnum.bst
index 50fe0187..0f220fe1 100644
--- a/elsartnum.bst
+++ b/elsartnum.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "se necesita key o journal en " cite$ * " para validar crossref " * crossref * warning$
             ""
         }{
-            "en {" journal * "\/}" *
+            "en {" journal * "}" *
         } if$
     }{
         "en " key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "se necesita editor, key o series en " cite$ * "para validar crossref " * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "se necesita editor, key o booktitle en " cite$ * " para validar crossref " * crossref * warning$
                 ""
             }{
-                "en {" booktitle * "\/}" *
+                "en {" booktitle * "}" *
             } if$
         }{
             "en " key *
@@ -911,12 +917,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -925,7 +936,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ
diff --git a/elsartnum_en.bst b/elsartnum_en.bst
index 161d2168..007f88c9 100644
--- a/elsartnum_en.bst
+++ b/elsartnum_en.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "need key or journal for " cite$ * " to crossref " * crossref * warning$
             ""
         }{
-            "in {" journal * "\/}" *
+            "in {" journal * "}" *
         } if$
     }{
         "in " key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "need editor, key, or series for " cite$ * " to crossref " * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "need editor, key, or booktitle for " cite$ * " to crossref " * crossref * warning$
                 ""
             }{
-                "in {" booktitle * "\/}" *
+                "in {" booktitle * "}" *
             } if$
         }{
             "in " key *
@@ -911,12 +917,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -925,7 +936,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ
diff --git a/elsartnumurl.bst b/elsartnumurl.bst
index 3596a88f..4339ca14 100644
--- a/elsartnumurl.bst
+++ b/elsartnumurl.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "se necesita key o journal en " cite$ * " para validar crossref " * crossref * warning$
             ""
         }{
-            "en {" journal * "\/}" *
+            "en {" journal * "}" *
         } if$
     }{
         "en " key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "se necesita editor, key o series en " cite$ * "para validar crossref " * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "se necesita editor, key o booktitle en " cite$ * " para validar crossref " * crossref * warning$
                 ""
             }{
-                "en {" booktitle * "\/}" *
+                "en {" booktitle * "}" *
             } if$
         }{
             "en " key *
@@ -925,12 +931,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -939,7 +950,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ
diff --git a/elsartnumurl_en.bst b/elsartnumurl_en.bst
index eabc032e..0a6edc91 100644
--- a/elsartnumurl_en.bst
+++ b/elsartnumurl_en.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "need key or journal for " cite$ * " to crossref " * crossref * warning$
             ""
         }{
-            "in {" journal * "\/}" *
+            "in {" journal * "}" *
         } if$
     }{
         "in " key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "need editor, key, or series for " cite$ * " to crossref " * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "need editor, key, or booktitle for " cite$ * " to crossref " * crossref * warning$
                 ""
             }{
-                "in {" booktitle * "\/}" *
+                "in {" booktitle * "}" *
             } if$
         }{
             "in " key *
@@ -925,12 +931,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -939,7 +950,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ
diff --git a/natnum.bst b/natnum.bst
index 2a33c726..d3022dee 100644
--- a/natnum.bst
+++ b/natnum.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "se necesita key o journal en " cite$ * " para validar crossref " * crossref * warning$
             ""
         }{
-            "en {" journal * "\/}" *
+            "en {" journal * "}" *
         } if$
     }{
         "en " key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "se necesita editor, key o series en " cite$ * "para validar crossref " * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "se necesita editor, key o booktitle en " cite$ * " para validar crossref " * crossref * warning$
                 ""
             }{
-                "en {" booktitle * "\/}" *
+                "en {" booktitle * "}" *
             } if$
         }{
             "en " key *
@@ -911,12 +917,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -925,7 +936,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ
diff --git a/natnum_en.bst b/natnum_en.bst
index 7b4a8f9c..888c97c1 100644
--- a/natnum_en.bst
+++ b/natnum_en.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "need key or journal for " cite$ * " to crossref " * crossref * warning$
             ""
         }{
-            "in {" journal * "\/}" *
+            "in {" journal * "}" *
         } if$
     }{
         "in " key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "need editor, key, or series for " cite$ * " to crossref " * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "need editor, key, or booktitle for " cite$ * " to crossref " * crossref * warning$
                 ""
             }{
-                "in {" booktitle * "\/}" *
+                "in {" booktitle * "}" *
             } if$
         }{
             "in " key *
@@ -911,12 +917,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -925,7 +936,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ
diff --git a/natnumurl.bst b/natnumurl.bst
index a1e7d741..457f4c82 100644
--- a/natnumurl.bst
+++ b/natnumurl.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "se necesita key o journal en " cite$ * " para validar crossref " * crossref * warning$
             ""
         }{
-            "en {" journal * "\/}" *
+            "en {" journal * "}" *
         } if$
     }{
         "en " key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "se necesita editor, key o series en " cite$ * "para validar crossref " * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "se necesita editor, key o booktitle en " cite$ * " para validar crossref " * crossref * warning$
                 ""
             }{
-                "en {" booktitle * "\/}" *
+                "en {" booktitle * "}" *
             } if$
         }{
             "en " key *
@@ -925,12 +931,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -939,7 +950,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ
diff --git a/natnumurl_en.bst b/natnumurl_en.bst
index abef95f6..c07193bc 100644
--- a/natnumurl_en.bst
+++ b/natnumurl_en.bst
@@ -124,8 +124,10 @@ FUNCTION {end.entry} {
     'skip$
     'add.period$
     if$
-    write$ newline$
-    "\backrefprint\backrefparscantrue" write$ newline$
+    write$
+    newline$
+    "\backrefprint\backrefparscantrue" write$
+    newline$
 }
 
 FUNCTION {field.or.null} {
@@ -244,8 +246,10 @@ FUNCTION {new.sentence.checka} {
 
 FUNCTION {output.bibitem} {
     newline$
-    "\backrefparscanfalse" write$ newline$
-    "\bibitem{" write$ cite$ write$ "}" write$ newline$
+    "\backrefparscanfalse" write$
+    newline$
+    "\bibitem{" write$ cite$ write$ "}" write$
+    newline$
     ""
     before.all 'output.state :=
 }
@@ -256,7 +260,7 @@ FUNCTION {output.links} {
             url empty$ {
                 "" *
             }{
-                ", \href{" * url * "}{\nolinkurl{\detokenize{" * url * "}}}" *
+                ", \href{" * url * "} {\nolinkurl{\detokenize{" * url * "}}}" *
                 urldate empty$ {
                     "" *
                 }{
@@ -264,10 +268,10 @@ FUNCTION {output.links} {
                 } if$
             } if$
         }{
-            ", \href{https://arxiv.org/abs/" * arxivId * "}{arXiv:\detokenize{" * arxivId * "}}" *
+            ", \href{https://arxiv.org/abs/" * arxivId * "} {\nolinkurl{arXiv:\detokenize{" * arxivId * "}}}" *
         } if$
     }{
-        ", \href{https://dx.doi.org/" * doi * "}{\nolinkurl{doi:\detokenize{" * doi * "}}}" *
+        ", \href{https://dx.doi.org/" * doi * "} {\nolinkurl{doi:\detokenize{" * doi * "}}}" *
     } if$
 }
 
@@ -280,12 +284,14 @@ FUNCTION {output.nonnull} {
             " " * write$
         }{
             output.state after.block = {
-                add.period$ write$ newline$
+                add.period$ write$
+                newline$
                 "\newblock " write$
             }{
                 output.state before.all = 'write$ {
                     output.state after.quoted.block = {
-                        write$ newline$
+                        write$
+                        newline$
                         "\newblock " write$
                     }{
                         add.period$ " " * write$
@@ -372,7 +378,7 @@ FUNCTION {format.article.crossref} {
             "need key or journal for " cite$ * " to crossref " * crossref * warning$
             ""
         }{
-            "in {" journal * "\/}" *
+            "in {" journal * "}" *
         } if$
     }{
         "in " key *
@@ -419,7 +425,7 @@ FUNCTION {format.book.crossref} {
                 "need editor, key, or series for " cite$ * " to crossref " * crossref * warning$
                 "" *
             }{
-                "{" * series * "\/}" *
+                "{" * series * "}" *
             } if$
         }{
             key *
@@ -530,7 +536,7 @@ FUNCTION {format.incoll.inproc.crossref} {
                 "need editor, key, or booktitle for " cite$ * " to crossref " * crossref * warning$
                 ""
             }{
-                "in {" booktitle * "\/}" *
+                "in {" booktitle * "}" *
             } if$
         }{
             "in " key *
@@ -925,12 +931,17 @@ FUNCTION {unpublished} {
 
 FUNCTION {begin.bib} {
     preamble$ empty$ 'skip$ {
-        preamble$ write$ newline$
+        preamble$ write$
+        newline$
     } if$
-    "\begin{thebibliography}{" longest.label * "}" * write$ newline$
-    "  \providecommand\backrefparscanfalse{}" write$ newline$
-    "  \providecommand\backrefparscantrue{}" write$ newline$
-    "  \providecommand\backrefprint{}" write$ newline$
+    "\begin{thebibliography}{" longest.label * "}" * write$
+    newline$
+    "  \providecommand\backrefparscanfalse{}" write$
+    newline$
+    "  \providecommand\backrefparscantrue{}" write$
+    newline$
+    "  \providecommand\backrefprint{}" write$
+    newline$
 }
 
 FUNCTION {default.type} {
@@ -939,7 +950,8 @@ FUNCTION {default.type} {
 
 FUNCTION {end.bib} {
     newline$
-    "\end{thebibliography}" write$ newline$
+    "\end{thebibliography}" write$
+    newline$
 }
 
 READ