1. Pierre Poulin and Alain Fournier. “Lights from highlights and shadows”. Computer Graphics (1992 Symposium on Interactive 3D Graphics), volume 25, pp. 31–38, March 1992.
2. Chris Schoeneman, Julie Dorsey, Brian Smits, James Arvo, and Donald P. Greenberg. “Painting With Light”. Computer Graphics (SIGGRAPH ’93 Proceedings), volume 27, pp. 143–146, August 1993.
3. John K. Kawai, James S. Painter, and Michael F. Cohen. “Radioptimization - Goal-based Rendering”. Computer Graphics (SIGGRAPH ’93 Proceedings), volume 27, pp. 147–154, August 1993.
4. Pat Hanrahan and Paul E. Haeberli. “Direct WYSIWYG Painting and Texturing on 3D Shapes”. Computer Graphics (SIGGRAPH 90 Proceedings), volume 24, pp. 215–223, August 1990.
5. R. Hall. “A Characterization of Illumination Models and Shading Techniques”. Visual Computer, Vol. 2, No. 5, pp. 268–77, 1986.