Update main.py

Author: stergioc

main.py

@@ -5,6 +5,7 @@
  "Lung Pattern Classification for Interstitial Lung Diseases Using a Deep Convolutional Neural Network"
  M. Anthimopoulos, S. Christodoulidis, L. Ebner, A. Christe and S. Mougiakakou
  IEEE Transactions on Medical Imaging (2016)
+ http://dx.doi.org/10.1109/TMI.2016.2535865
 
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