diff --git a/spring-swagger-codegen/custom-validations-opeanpi-codegen/README.md b/spring-swagger-codegen/custom-validations-opeanpi-codegen/README.md
index 83eec25c03..3a2b74af70 100644
--- a/spring-swagger-codegen/custom-validations-opeanpi-codegen/README.md
+++ b/spring-swagger-codegen/custom-validations-opeanpi-codegen/README.md
@@ -1 +1,5 @@
 # This is a sample on how we can merge the OpenApi code generation with the a custom annotation using ConstraintValidator
+
+### Relevant Articles:
+
+- [Custom Validation with Swagger Codegen](https://www.baeldung.com/java-swagger-custom-validation)