Osamu Morikawa Takanori Maesako The Relationship between the Arrangement of Participants and the Comfortableness of Conversation in HyperMirror. 109-116 2001 conf/ct/2001 Cognitive Technology http://link.springer.de/link/service/series/0558/bibs/2117/21170109.htm db/conf/ct/ct2001.html#MorikawaM01