Laroussi Bouguila Béat Hirsbrunner Makoto Sato Masaru Iwashita Virtual Locomotion Interface with Ground Surface Simulation. 2003 conf/icat/2003 ICAT http://www.vrsj.org/ic-at/ICAT2003/php/upload/127_camera_e16236ce35882a0e86575d8fdb73f30c.pdf db/conf/icat/icat2003.html#BouguilaHSI03