Index: trunk/CONTRIBUTION
===================================================================
--- trunk/CONTRIBUTION	(revision 10455)
+++ trunk/CONTRIBUTION	(revision 11660)
@@ -71,4 +71,13 @@
 with the New (2-clause) BSD license.
 
+------------------------------- PROJECTION DATA -------------------------------
+
+French NTF_R93 NTV2 grid: Source: IGN - Institut national de l'information
+                                        géographique et forestière
+
+German BETA2007 NTV2 grid: Source: BKG - Bundesamt für Kartographie und Geodäsie
+
+Swiss CHENYX06 NTV2 grid: Source: Swiss Federal Office of Topography
+
 ------------------------------------ ICONS ------------------------------------