diff -r d9d1cb759951 -r 4f9a45a6d6f0 doc/groups.dox
--- a/doc/groups.dox	Sat Mar 16 13:16:27 2013 +0100
+++ b/doc/groups.dox	Sat Mar 16 14:09:53 2013 +0100
@@ -428,6 +428,11 @@
 (capacities, supply values, and costs), except for \ref CapacityScaling,
 which is capable of handling real-valued arc costs (other numerical
 data are required to be integer).
+
+For more details about these implementations and for a comprehensive 
+experimental study, see the paper \ref KiralyKovacs12MCF.
+It also compares these codes to other publicly available
+minimum cost flow solvers.
 */
 
 /**