Bumps version number and updates citation reference.

README.md

@@ -1,24 +1,25 @@
 # SpyTorch
 A tutorial on surrogate gradient learning in spiking neural networks
 
-Version: 0.2 
+Version: 0.3
 
 This repository contains tutorial files to get you started with the basic ideas
 of surrogate gradient learning in spiking neural networks using PyTorch. 
 
 Feedback and contributions are welcome.
 
 > For more information on surrogate gradient learning please refer to:
-> Neftci, E.O., Mostafa, H., and Zenke, F. (2019). Surrogate Gradient Learning in Spiking Neural Networks. 
-> https://arxiv.org/abs/1901.09948
+> Neftci, E.O., Mostafa, H., and Zenke, F. (2019). Surrogate Gradient Learning in Spiking Neural Networks: Bringing the Power of Gradient-based optimization to spiking neural networks. IEEE Signal Processing Magazine 36, 51–63.
+> https://ieeexplore.ieee.org/document/8891809
+> preprint: https://arxiv.org/abs/1901.09948
 
 Also see https://github.com/surrogate-gradient-learning
 
 
 
 ## Copyright and license
 
-Copyright 2019 Friedemann Zenke, https://fzenke.net
+Copyright 2019-2020 Friedemann Zenke, https://fzenke.net
 
 This work is licensed under a Creative Commons Attribution 4.0 International License.
 http://creativecommons.org/licenses/by/4.0/