diff --git a/user_interfaces/README.md b/user_interfaces/README.md
index b4f4429..955bcc1 100644
--- a/user_interfaces/README.md
+++ b/user_interfaces/README.md
@@ -1,3 +1,5 @@
 # User Interfaces
 
-[Squeak: a Language for Communicating with Mice](http://ordiecole.com/squeak/cardelli_squeak1985.pdf)
+* :scroll: [Squeak: a Language for Communicating with Mice](http://ordiecole.com/squeak/cardelli_squeak1985.pdf)
+
+* :scroll: [Projecting a modular future](http://www.voelter.de/data/pub/projectingModuleFuture.pdf)