Michael M. Stark, Elaine Cohen, Tom Lyche, Richard F. Riesenfeld "Computing Exact Shadow Irradiance Using Splines" SIGGRAPH 99 Conference Proceedings. Paper pageMichael M. Stark, Richard F. Riesenfeld "Exact Radiosity Reconstruction and Shadow Computation Using Vertex Tracing" 11th Eurographics Workshop on Rendering. Paper page