TY - JOUR AU - T. M. Grozovskii TI - Bifurcations of ``apple'' and ``half-apple'' polycycles in generic two-parameter families JO - Differencialʹnye uravneniâ PY - 1996 SP - 458 EP - 469 VL - 32 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1996_32_4_a3/ LA - ru ID - DE_1996_32_4_a3 ER -