Robina Hetherington, John P. Scott. Adding a fourth dimension to three dimensional virtual spaces. In Donald P. Brutzman, Luca Chittaro, Richard Puk, editors, Proceeding of the Ninth International Conference on 3D Web Technology, Web3D 2004, Monterey, California, USA, April 5-8, 2004. pages 163-172, ACM, 2004. [doi]
Abstract is missing.