updated

README.md

@@ -5,3 +5,12 @@ Stacked what where autoencoders in tensorflow and keras.
 mnist_swwae-tf.py, tensorflow compatible version of mnist_swwae.py from https://github.com/fchollet/keras/blob/master/examples/mnist_swwae.py
 
 mnist_swwae-pure-tf.py, same as above but uses pure tensorflow, no keras.
+
+mnist_swwae-pure-tf-paper.py, uses pure tensorflow but implements L2M error terms not computed in the above better matching derivation in paper [1]. 
+
+[1] 
+Stacked What-Where Auto-encoders
+Junbo Zhao, Michael Mathieu, Ross Goroshin, Yann LeCun
+https://arxiv.org/abs/1506.02351
+
+