TY - JOUR AU - A. V. Pajitnov TI - On closed orbits of gradient flows for circle-valued mappings JO - Algebra i analiz PY - 2002 SP - 186 EP - 240 VL - 14 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_2002_14_3_a8/ LA - ru ID - AA_2002_14_3_a8 ER -