Masaki Kameya, Robert R. Lewis. A smooth, fast, accurate representation of reflectance. In Alyn P. Rockwood, editor, Proceedings of the SIGGRAPH 2003 Conference on Sketches & Applications: in conjunction with the 30th annual conference on Computer graphics and interactive techniques, 2003, San Diego, California, USA, July 27-31, 2003. ACM, 2003. [doi]