Development of eye-ball robot serving, as a bodily media and its applicability as a communication means. - Chikara Ishibiki; Hiroshi Itoh; Yoshiyuki Miwa (IROS, 2001)

Shadow communication: system for embodied interaction with remote partners. - Yoshiyuki Miwa; Chikara Ishibiki (CSCW, 2004)

Expression of Existence Supporting Sharing Interspatial Distance-"Maai": Development of Roving Object Integrating Partner's Shadow and Video Image. - Chikara Ishibiki; Yoshiaki Nakajima; Daisuke Matsumoto; Yoshiyuki Miwa (J. Robotics Mechatronics, 2005)