diff --git a/Documentation/doc/biblio/geom.bib b/Documentation/doc/biblio/geom.bib
index 5ba83931427..724fffd4720 100644
--- a/Documentation/doc/biblio/geom.bib
+++ b/Documentation/doc/biblio/geom.bib
@@ -85653,7 +85653,7 @@ fitting method."
 , title =	"The {CORE} Library Project"
 , edition =	"1.2"
 , year =	1999
-, url =	"https://cs.nyu.edu/exact/core/"
+, url =	"https://www.cs.nyu.edu/exact/doc/core.pdf"
 , update =	"00.03 devillers"
 }