diff --git a/react-implementation.md b/react-implementation.md
index f17c19c..846b47a 100644
--- a/react-implementation.md
+++ b/react-implementation.md
@@ -92,6 +92,9 @@
   
   
 #### Implementation and Internals
+- **React as a UI Runtime by Dan Abramov**
+  https://overreacted.io/react-as-a-ui-runtime
+  A deep dive into the React programming model from first principles
 
 - **React.js Reconciliation**  
   https://www.infoq.com/presentations/react-reconciliation  
@@ -245,4 +248,4 @@
   
 - **What is React Fiber?**  
   https://giamir.com/what-is-react-fiber  
-  An overview of the React Fiber rewrite, and how React's reconciler has been rewritten to improve performance and make rendering more flexible.
\ No newline at end of file
+  An overview of the React Fiber rewrite, and how React's reconciler has been rewritten to improve performance and make rendering more flexible.