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index a3f8a4e..fa9f0fe 100644
--- a/README.md
+++ b/README.md
@@ -83,3 +83,7 @@ A large part of the slides is based on the lecture notes of similar courses:
 - [AAA528: Computational Logic](http://prl.korea.ac.kr/~pronto/home/courses/aaa528/2018/), Korea Univ.
 - [CSE291: Program Synthesis](https://github.com/nadia-polikarpova/cse291-program-synthesis), UCSD
 - [CSE9116: Program Synthesis](http://psl.hanyang.ac.kr/courses/cse9116_2022s/), Hanyang Univ.
+
+## References
+- [PL Wiki](https://github.com/prosyslab/pl-wiki/wiki)
+- [Automated Reasoning @ Amazon](https://www.amazon.science/blog/?q=&f0=0000017d-6ba3-ddaa-a97d-efa3e2ed0000&s=0&expandedFilters=Research%2520area%2CTag%2CConference%2CAuthor%2CDate%2C)