Update README.md

README.md

@@ -52,7 +52,7 @@ We release [InterpretMe]
 *Hughes et al.*. 2016.[paper](https://arxiv.org/pdf/1612.01678.pdf)
 
 1. **An Effective and Interpretable Method for Document Classification**
-*Ngo Van Linh, Nguyen Kim Anh, Khoat Than, Chien Nguyen Dang*.
+*Ngo Van Linh, Nguyen Kim Anh, Khoat Than, Chien Nguyen Dang*. KAIS 2016.[paper](http://is.hust.edu.vn/~khoattq/papers/kais-2016.pdf)
 
 1. **Interpretable probabilistic embeddings: bridging the gap between topic models and neural networks.**
 *Anna Potapenko, Artem Popov, and Konstantin Vorontsov*. 2017.[paper](https://arxiv.org/pdf/1711.04154.pdf)