diff --git a/README.md b/README.md
index ad12b73..75cd80d 100644
--- a/README.md
+++ b/README.md
@@ -5,4 +5,6 @@ https://github.com/OpenKinect
 
 https://openkinect.org/wiki/Main_Page 
 
-https://github.com/cartzhang/Kinect4UE4Plugin
\ No newline at end of file
+https://github.com/cartzhang/Kinect4UE4Plugin
+
+https://lisajamhoury.medium.com/understanding-kinect-v2-joints-and-coordinate-system-4f4b90b9df16
\ No newline at end of file