Yoshihiro Takamura Norihiro Abe Kazuaki Tanaka Hirokazu Taki Shoujie He A Virtual Billiard Game with Visual, Auditory and Haptic Sensation. 700-705 2006 conf/edutainment/2006 Edutainment http://dx.doi.org/10.1007/11736639_86 db/conf/edutainment/edutainment2006.html#TakamuraATTH06