B. Schönhage, A. van Ballegooij, and A. Elliëns. Proceedings of the fifth symposium on Virtual reality modeling language (Web3D-VRML), page 131--138. New York, NY, USA, ACM, (2000)
R. Bobrik, M. Reichert, and T. Bauer. Business Process Management, volume 4714 of Lecture Notes in Computer Science, Springer, Berlin / Heidelberg, (2007)
H. Yoo, and S. Cheon. Proceedings of the 2006 Asia-Pacific Symposium on Information Visualisation - Volume 60, page 143--146. Darlinghurst, Australia, Australia, Australian Computer Society, Inc., (2006)