Hideki Aoyama Motoyuki Ozeki Yuichi Nakamura Interaction Reproducing Model: A Model for Giving Supports Appropriate to User State. 426-435 2008 PCM http://dx.doi.org/10.1007/978-3-540-89796-5_44 conf/pcm/2008 db/conf/pcm/pcm2008.html#AoyamaON08