Noriyoshi Shimizu Maki Sugimoto Dairoku Sekiguchi Shoichi Hasegawa Masahiko Inami Mixed reality robotic user interface: virtual kinematics to enhance robot motion. 166-169 2008 Advances in Computer Entertainment Technology http://doi.acm.org/10.1145/1501750.1501789 conf/ACMace/2008 db/conf/ACMace/ace2008.html#ShimizuSSHI08