%0 Journal Article %A Yazaki, Shigetoshi %T On the tangential velocity arising in a crystalline approximation of evolving plane curves %J Kybernetika %D 2007 %P 913-918 %V 43 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_2007__43_6_a14/ %G en %F KYB_2007__43_6_a14