TY - JOUR AU - V. O. Manturov TI - On closedness of curves with periodic curvature JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 2000 SP - 477 EP - 483 VL - 6 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_2000_6_2_a8/ LA - ru ID - FPM_2000_6_2_a8 ER -