diff --git a/README.md b/README.md
index 8b8d765..4caecbf 100644
--- a/README.md
+++ b/README.md
@@ -183,7 +183,7 @@ The "classic" Satoshi-blockchain is like a git repo with a single master branch
 -   [Ethereum problems](https://github.com/ethereum/wiki/wiki/Problems)
 
 ### Consortium Blockchain
-
+-   [The Byzantine Generals Problem](https://people.eecs.berkeley.edu/~luca/cs174/byzantine.pdf)
 -   [Is consortium blockchain better?](http://www.infoq.com/cn/news/2018/10/is-consortium-blockchain-better)   
 -   [5 consortium blockchain comparison](http://www.infoq.com/cn/articles/5-consortium-blockchain-comparison) / [quick version](https://upload-images.jianshu.io/upload_images/11336404-f753396df0e930c8.jpg?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)    
 -   [FISCO BCOS vs Fabric](http://www.infoq.com/cn/news/2018/09/uncover-consortium-blockchain)