Naoko Matsumoto Hirotada Ueda Tatsuya Yamazaki Hajime Murai Life with a Robot Companion: Video Analysis of 16-Days of Interaction with a Home Robot in a "Ubiquitous Home" Environment. 341-350 2009 HCI (2) http://dx.doi.org/10.1007/978-3-642-02577-8_37 conf/hci/2009-2 db/conf/hci/hci2009-2.html#MatsumotoUYM09