--- ray/doc/ray.1	2011/07/15 17:45:46	1.22
+++ ray/doc/ray.1	2011/07/15 17:47:33	1.23
@@ -1554,7 +1554,7 @@ References
 .LP
 Ward, G., R. Mistrick, E.S. Lee, A. McNeil, J. Jonsson,
 ``Simulating the Daylight Performance of Complex Fenestration Systems
-Using Bidirectional Scattering Distribution Functions within Radiance''
+Using Bidirectional Scattering Distribution Functions within Radiance,''
 .I "Journal of the Illuminating Engineering Soc. of North America",
 April 2011.
 .LP