diff --git a/Manual/doc_tex/Manual/manual-3.9.bib b/Manual/doc_tex/Manual/manual-3.9.bib
index b7053259872..4c568f9fcf9 100644
--- a/Manual/doc_tex/Manual/manual-3.9.bib
+++ b/Manual/doc_tex/Manual/manual-3.9.bib
@@ -206,6 +206,16 @@
 , year =        2011
 }
 
+@incollection{cgal:d-cm-11b
+, author =  "Guillaume Damiand"
+, title =   "Combinatorial Maps"
+, publisher =  "{CGAL Editorial Board}"
+, edition =     "{3.9}"
+, booktitle =   "{CGAL} User and Reference Manual"
+, url = "http://www.cgal.org/Manual/3.8/doc_html/cgal_manual/packages.html#Pkg:CombinatorialMaps
+, year =        2011
+}
+
 @incollection{cgal:fwzh-rbso2-11b
 , author =  "Efi Fogel and  Ron Wein and  Baruch Zukerman and Dan Halperin"
 , title =   "{2D} Regularized {Boolean} Set-Operations"