M. Li, M. Magnor, and H. Seidel. Graphics Interface, volume 62 of ACM International Conference Proceeding Series, page 41-48. Canadian Human-Computer Communications Society, (2004)
V. Havran, C. Damez, K. Myszkowski, and H. Seidel. Rendering Techniques, volume 44 of ACM International Conference Proceeding Series, page 106-117. Eurographics Association, (2003)