1) J. Krikke: "Computer Graphics Advances the Art of Anime", IEEE Computer Society, pp.14-19 (May/June 2006)
2) R. Barzel: "Lighting Control for Computer Cinematography", Journal of Graphics Tools 2, pp.1-20 (1997)
3) L. Petrovic, B. Fujito, L Williams, and A. Finkelstein: "Shadows for Cel Animation", in Proceedings of SIGGRAPH2000, pp.511-516 (2000)
4) F. Pellacini, P Tole, and D Greenberg: "A User Interface for Interactive Cinematic Shadow Design", ACM Transactions on Graphics, Proceedings of ACM SIGGRAPH2002 21, pp.563-566 (2002)
5) J. Lasseter: "Principle of Traditional Animation Applied to 3D Computer Animation", Proceedings of SIGGRAPH, pp.35-44 (1987)