Qing Shi Hiroyuki Ishii Shogo Fumino Shinichiro Konno Shinichi Kinoshita Atsuo Takanishi Satoshi Okabayashi Naritoshi Iida Hiroshi Kimura A robot-rat interaction experimental system based on the rat-inspired mobile robot WR-4. 402-407 2011 ROBIO http://dx.doi.org/10.1109/ROBIO.2011.6181319 conf/robio/2011 db/conf/robio/robio2011.html#ShiIFKKTOIK11