diff --git a/apache-tomcat/sso/README.md b/apache-tomcat/sso/README.md
index 2b515178e0..7fe194b2f8 100644
--- a/apache-tomcat/sso/README.md
+++ b/apache-tomcat/sso/README.md
@@ -1,5 +1,7 @@
 ### Related articles
 
+- [SSO with Apache Tomcat](https://www.baeldung.com/apache-tomcat-sso)
+
 ### Launch Example using Docker
 
-$ docker-compose up
\ No newline at end of file
+$ docker-compose up
diff --git a/persistence-modules/java-mongodb/README.md b/persistence-modules/java-mongodb/README.md
index 6f6bcba250..a58806f743 100644
--- a/persistence-modules/java-mongodb/README.md
+++ b/persistence-modules/java-mongodb/README.md
@@ -18,3 +18,4 @@ This module contains articles about MongoDB in Java.
 - [Check Collection Existence in MongoDB](https://www.baeldung.com/java-check-collection-existence-mongodb)
 - [Case Insensitive Sorting in MongoDB](https://www.baeldung.com/java-mongodb-case-insensitive-sorting)
 - [Push and Set Operations in Same MongoDB Update](https://www.baeldung.com/java-mongodb-push-set)
+- [Push Operations in MongoDB](https://www.baeldung.com/mongodb-push-operations)
diff --git a/persistence-modules/spring-boot-persistence-mongodb/README.md b/persistence-modules/spring-boot-persistence-mongodb/README.md
index 97241ad464..f5eaeff89c 100644
--- a/persistence-modules/spring-boot-persistence-mongodb/README.md
+++ b/persistence-modules/spring-boot-persistence-mongodb/README.md
@@ -5,4 +5,5 @@
 - [Upload and Retrieve Files Using MongoDB and Spring Boot](https://www.baeldung.com/spring-boot-mongodb-upload-file)
 - [GridFS in Spring Data MongoDB](http://www.baeldung.com/spring-data-mongodb-gridfs)
 - [ZonedDateTime with Spring Data MongoDB](https://www.baeldung.com/spring-data-mongodb-zoneddatetime)
+- [A Guide to @DBRef in MongoDB](https://www.baeldung.com/spring-mongodb-dbref-annotation)
 
diff --git a/spring-boot-modules/spring-boot-camel/README.md b/spring-boot-modules/spring-boot-camel/README.md
index f9594a95a6..c5f50e8339 100644
--- a/spring-boot-modules/spring-boot-camel/README.md
+++ b/spring-boot-modules/spring-boot-camel/README.md
@@ -25,3 +25,4 @@ or return code of 201 and the response: `{"id": 10,"name": "Hello, World"}` - if
 ## Relevant articles:
 
 - [Apache Camel with Spring Boot](https://www.baeldung.com/apache-camel-spring-boot)
+- [Apache Camel Routes Testing in Spring Boot](https://www.baeldung.com/spring-boot-apache-camel-routes-testing)