Valentine: an environment for home office worker providing informal communication and personal space. - Shinkuro Honda; Hironari Tomioka; Takaaki Kimura; Takaharu Oosawa; Ken-ichi Okada 002; Yutaka Matsushita (GROUP, 1997)

A Virtual Office Environment for Supporting Informal Communications and Securing Personal Space. - Shinkuro Honda; Takaaki Kimura; Hironari Tomioka; Takaharu Oosawa; Ken-ichi Okada 002; Yutaka Matsushita (HCI (2), 1997)

A company-office system "Valentine" providing informal communication and personal space based on 3D virtual space and avatars. - Shinkuro Honda; Hironari Tomioka; Takaaki Kimura; Takaharu Oosawa; Ken-ichi Okada 002; Yutaka Matsushita (Inf. Softw. Technol., 1999)