Remember good pointers to Montgomery multiplication algorithm
descriptions as pointed out by Dave Carman <carman@erols.com>
diff --git a/crypto/bn/bn_mont.c b/crypto/bn/bn_mont.c
index 2215dc3..e73b0cb 100644
--- a/crypto/bn/bn_mont.c
+++ b/crypto/bn/bn_mont.c
@@ -56,6 +56,12 @@
* [including the GNU Public Licence.]
*/
+/*
+ * Details about Montgomery multiplication algorithms can be found at:
+ * http://www.ece.orst.edu/ISL/Publications.html
+ * http://www.ece.orst.edu/ISL/Koc/papers/j37acmon.pdf
+ */
+
#include <stdio.h>
#include "cryptlib.h"
#include "bn_lcl.h"
