An Input Widget Framework for Multi-Modal and Multi-Device Environments. - Nobuyuki Kobayashi; Eiji Tokunaga; Hiroaki Kimura; Yasufumi Hirakawa; Masaaki Ayabe; Tatsuo Nakajima (SEUS, 2005)

Lifestyle Ubiquitous Gaming: Making Daily Lives More Plesurable. - Tatsuo Nakajima; Vili Lehdonvirta; Eiji Tokunaga; Masaaki Ayabe; Hiroaki Kimura; Yohei Okuda (RTCSA, 2007)

Lifestyle Ubiquitous Gaming: Computer Games Making Daily Lives Fun. - Eiji Tokunaga; Masaaki Ayabe; Hiroaki Kimura; Tatsuo Nakajima (SEUS, 2007)