Pierre Poulin, John Amanatides. Shading and Shadowing with Linear Light Sources. In Carlo E. Vandoni, David A. Duce, editors, Eurographics 1990, Proceedings of the European Computer Graphics Conference and Exhibition, Montreux, Switzerland, 4-7 September 1990. North-Holland / Eurographics Association, 1990. [doi]
Abstract is missing.