%0 Journal Article %A K. Furukawa %A T. Yonemura %A S. Nagae %T Presenting Educational Contents by Using a Non-contact Viewer %J Journal for geometry and graphics %D 2002 %P 213-22 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_2002_6_2_a10/ %F JGG_2002_6_2_a10