diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -176,7 +176,11 @@ Contributions are always welcome!
 		* [Part 10 - How do you know if you’ve got a scalability issue?](https://blogs.msdn.microsoft.com/larryosterman/2005/03/03/concurrency-part-10-how-do-you-know-if-youve-got-a-scalability-issue/)
 		* [Part 11 – Hidden scalability issues](https://blogs.msdn.microsoft.com/larryosterman/2005/03/04/concurrency-part-11-hidden-scalability-issues/)
 		* [Part 12 – Hidden scalability issues (cont)](https://blogs.msdn.microsoft.com/larryosterman/2005/03/07/concurrency-part-12-hidden-scalability-issues-part-2/)
-	* [How Discord Scaled Elixir to Five Millions Concurrent Users](https://blog.discordapp.com/scaling-elixir-f9b8e1e7c29b)		
+	[Concurrency with Erlang](http://learnyousomeerlang.com/the-hitchhikers-guide-to-concurrency)
+		* [Erlang in WhatsApp](https://blog.whatsapp.com/196/1-million-is-so-2011)
+		* [Erlang in Riot Chat Server](https://engineering.riotgames.com/news/chat-service-architecture-servers)
+		* [How Discord Scaled Elixir to Five Millions Concurrent Users](https://blog.discordapp.com/scaling-elixir-f9b8e1e7c29b)
+		* [Mnesia: A Distributed DBMS Rooted in Concurrency](https://www.developer.com/db/article.php/3864331/Mnesia-A-Distributed-DBMS-Rooted-in-Concurrency.htm)		
 * [Event-Driven Architecture](https://martinfowler.com/articles/201701-event-driven.html)
 	* [Messaging](https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/cjt1004_.html)
 		* [Publish-Subscribe](https://aws.amazon.com/pub-sub-messaging/)