diff --git a/README.md b/README.md
index e23929b..8d39385 100644
--- a/README.md
+++ b/README.md
@@ -17,3 +17,7 @@ $ pipenv install --dev
 ```bash
 $ pipenv run unittest
 ```
+
+### References
+
+- [Boyer-Moore string-search algorithm](https://en.wikipedia.org/wiki/Boyer%E2%80%93Moore_string-search_algorithm)