TY - JOUR AU - Ishiwata, Tetsuya TI - Motion of spiral-shaped polygonal curves by nonlinear crystalline motion with a rotating tip motion JO - Mathematica Bohemica PY - 2015 SP - 111 EP - 119 VL - 140 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.2015.144318/ DO - 10.21136/MB.2015.144318 LA - en ID - 10_21136_MB_2015_144318 ER -