TY - JOUR AU - K. Furukawa AU - T. Yonemura AU - S. Nagae TI - Presenting Educational Contents by Using a Non-contact Viewer JO - Journal for geometry and graphics PY - 2002 SP - 213 EP - 22 VL - 6 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JGG_2002_6_2_a10/ ID - JGG_2002_6_2_a10 ER -