Takanori Komatsu Yuuki Seki Ryohei Sasama Tomoharu Yamaguchi Keiji Yamada Investigation of Users' Reactions toward Various Kinds of Artificial Agents: Comparison of an Robotic Agent with an On-screen Agent. 470-478 2011 HCI (6) http://dx.doi.org/10.1007/978-3-642-21663-3_50 conf/hci/2011-6 db/conf/hci/hci2011-6.html#KomatsuSSYY11