Bruce Walter, Stephen R. Marschner, Hongsong Li, Kenneth E. Torrance. Microfacet Models for Refraction through Rough Surfaces. In Jan Kautz, Sumanta N. Pattanaik, editors, Proceedings of the Eurographics Symposium on Rendering Techniques, Grenoble, France, 2007. pages 195-206, Eurographics Association, 2007. [doi]
Abstract is missing.