Cindy M. Goral, Kenneth E. Torrance, Donald P. Greenberg, Bennett Battaile. Modeling the interaction of light between diffuse surfaces. In Hank Christiansen, editor, Proceedings of the 11th Annual Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 1984, Minneapolis, Minnesota, USA, July 23-27, 1984. pages 213-222, ACM, 1984. [doi]
Abstract is missing.