diff --git a/adapter/README.md b/adapter/README.md
index 27d440438..553471816 100644
--- a/adapter/README.md
+++ b/adapter/README.md
@@ -107,6 +107,8 @@ Use the Adapter pattern when
 * [Dzone](https://dzone.com/articles/adapter-design-pattern-in-java)
 * [Refactoring Guru](https://refactoring.guru/design-patterns/adapter/java/example)
 * [Baeldung](https://www.baeldung.com/java-adapter-pattern)
+* [GeeksforGeeks](https://www.geeksforgeeks.org/adapter-pattern/)
+
 
 ## Consequences
 Class and object adapters have different trade-offs. A class adapter
diff --git a/adapter/pom.xml b/adapter/pom.xml
index d54cbd048..9307c255d 100644
--- a/adapter/pom.xml
+++ b/adapter/pom.xml
@@ -4,7 +4,7 @@
     This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
 
     The MIT License
-    Copyright © 2014-2022 Ilkka Seppälä
+    Copyright © 2014-2023 Ilkka Seppälä
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
diff --git a/facade/README.md b/facade/README.md
index 4090f89b8..4efa8f7b7 100644
--- a/facade/README.md
+++ b/facade/README.md
@@ -212,6 +212,15 @@ subsystem independence and portability.
 If subsystems are dependent, then you can simplify the dependencies between them by making them 
 communicate with each other solely through their facades.
 
+## Tutorials
+
+*[DigitalOcean](https://www.digitalocean.com/community/tutorials/facade-design-pattern-in-java)
+* [Refactoring Guru](https://refactoring.guru/design-patterns/facade)
+* [GeekforGeeks](https://www.geeksforgeeks.org/facade-design-pattern-introduction/)
+* [Tutorialspoint](https://www.tutorialspoint.com/design_pattern/facade_pattern.htm)
+
+
+
 ## Credits
 
 * [Design Patterns: Elements of Reusable Object-Oriented Software](https://www.amazon.com/gp/product/0201633612/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0201633612&linkCode=as2&tag=javadesignpat-20&linkId=675d49790ce11db99d90bde47f1aeb59)