Merge pull request pytorch#12 from ypwhs/patch-1

Add paper links.

Author: kuangliu

README.md

@@ -15,15 +15,15 @@ Cons:
 ## Accuracy
 | Model             | Acc.        |
 | ----------------- | ----------- |
-| VGG16             | 92.64%      |
-| ResNet18          | 93.02%      |
-| ResNet50          | 93.62%      |
-| ResNet101         | 93.75%      |
-| ResNeXt29(32x4d)  | 94.73%      |
-| ResNeXt29(2x64d)  | 94.82%      |
-| DenseNet121       | 95.04%      |
-| ResNet18(pre-act) | 95.11%      |
-| DPN92             | 95.16%      |
+| [VGG16](https://arxiv.org/abs/1409.1556)             | 92.64%      |
+| [ResNet18](https://arxiv.org/abs/1512.03385)          | 93.02%      |
+| [ResNet50](https://arxiv.org/abs/1512.03385)          | 93.62%      |
+| [ResNet101](https://arxiv.org/abs/1512.03385)         | 93.75%      |
+| [ResNeXt29(32x4d)](https://arxiv.org/abs/1611.05431)  | 94.73%      |
+| [ResNeXt29(2x64d)](https://arxiv.org/abs/1611.05431)  | 94.82%      |
+| [DenseNet121](https://arxiv.org/abs/1608.06993)       | 95.04%      |
+| [ResNet18(pre-act)](https://arxiv.org/abs/1603.05027) | 95.11%      |
+| [DPN92](https://arxiv.org/abs/1707.01629)             | 95.16%      |
 
 ## Learning rate adjustment
 I manually change the `lr` during training: