diff --git a/README.md b/README.md
index 2133aa1..63b6da6 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,9 @@ GitHub : https://github.com/ansrivas/GNG/tree/master?tab=readme-ov-file
 GitHub-1: https://github.com/rendchevi/growing-neural-gas/blob/master/README.md 
  Youtube_GitHub-1: https://www.youtube.com/watch?v=Dt73QWZQck4&t=2226s
 
+Reconstruction
+https://hal.science/hal-02564265/document
+
 # -----------------------Tuto------------------------------
  
 apprendre openGL