TY - JOUR AU - I. G. Rozet TI - The closing of the separatrices of a certain first order differential equation JO - Differencialʹnye uravneniâ PY - 1971 SP - 2007 EP - 2012 VL - 7 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1971_7_11_a8/ LA - ru ID - DE_1971_7_11_a8 ER -