diff --git a/js/data.js b/js/data.js
index cd71016..eef58dc 100644
--- a/js/data.js
+++ b/js/data.js
@@ -1,3 +1,5 @@
+//Source for those coordinates : http://dmccooey.com/polyhedra/
+
 C0  = 0.0478487627793223584957428264710
 C1  = 0.0820874952323578596367661535721
 C2  = 0.0919831947610306166536978645902