3D palette: a virtual reality content creation tool. - Mark Billinghurst; Sisinio Baldis; Lydia Matheson; Mark Philips (VRST, 1997)

Virtual playground: architectures for a shared virtual world. - Paul Schwartz; Lauren J. Bricker; Bruce Campbell; Thomas A. Furness; Kori Inkpen; Lydia Matheson; Nobutatsu Nakamura; Li-Sheng Shen; Susan Tanney; Shihming Yen (VRST, 1998)