TY - JOUR AU - B. F. Ivanov TI - On the question of the existence of closed trajectories in the neighborhood of a homoclinic curve JO - Differencialʹnye uravneniâ PY - 1979 SP - 548 EP - 550 VL - 15 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1979_15_3_a18/ LA - ru ID - DE_1979_15_3_a18 ER -