TY - JOUR AU - Yazaki, Shigetoshi TI - On the tangential velocity arising in a crystalline approximation of evolving plane curves JO - Kybernetika PY - 2007 SP - 913 EP - 918 VL - 43 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_2007__43_6_a14/ LA - en ID - KYB_2007__43_6_a14 ER -