Update README.md

README.md

@@ -29,4 +29,11 @@ RoFormerModel.from_pretrained('Roformer-base-japanese')
   
   
   
- Contribute by Yokohama Nationaly University Mori Lab
+ Contribute by Yokohama Nationaly University Mori Lab
+ 
+ @article{su2021roformer,
+  title={Roformer: Enhanced transformer with rotary position embedding},
+  author={Su, Jianlin and Lu, Yu and Pan, Shengfeng and Wen, Bo and Liu, Yunfeng},
+  journal={arXiv preprint arXiv:2104.09864},
+  year={2021}
+}