Three dimensional Terrain modeling and display for environmental assessment. - Kazufumi Kaneda; Fujiwa Kato; Eihachiro Nakamae; Tomoyuki Nishita; H. Tanaka; Takao Noguchi (SIGGRAPH, 1989)

Realistic Image Synthesis of Complex Objects Using a Simplified Model. - Kazufumi Kaneda; Haruhiko Iriyama; Fujiwa Kato; Eihachiro Nakamae (Modeling in Computer Graphics, 1991)

Simplification of Polygonal Surface with Attributes. - Eihachiro Nakamae; Jianyun Chai; Hiroyuki Inuyama; Fujiwa Kato (ICSC, 1995)

A Model of Skylight and Calculation of Its Illuminance. - Eihachiro Nakamae; Guofang Jiao; Katsumi Tadamura; Fujiwa Kato (ICSC, 1995)