Update Attention.md

Attention.md

@@ -6,7 +6,9 @@
 1. - [ ] Minh-Thang Luong, Hieu Pham, Christopher D. Manning "**Effective Approaches to Attention-based Neural Machine Translation**." arxiv(2015).[pdf](https://arxiv.org/abs/1508.04025v3)
 
 ## Self Attention
-1. - [ ] Jianpeng Cheng, Li Dong and Mirella Lapata "**Long Short-Term Memory-Networks for Machine Reading**." arxiv(2016).[pdf](https://arxiv.org/abs/1601.06733)
+1. - [ ] Zhouhan Lin, Minwei Feng, Cicero Nogueira dos Santos, Mo Yu, Bing Xiang, Bowen Zhou, Yoshua Bengio. "**A Structured Self-attentive Sentence Embedding**." arxiv(2017).[pdf](https://arxiv.org/abs/1703.03130)
+
+1. - [ ] Jianpeng Cheng, Li Dong and Mirella Lapata. "**Long Short-Term Memory-Networks for Machine Reading**." arxiv(2016).[pdf](https://arxiv.org/abs/1601.06733)
 
 1. - [ ] Minh-Thang Luong, Hieu Pham, Christopher D. Manning "**Attention Is All You Need**." arxiv(2017).[pdf](https://arxiv.org/abs/1706.03762)