TY - JOUR AU - I. S. Kukles AU - I. G. Rozet TI - The singular separatrix cycles of a quadratic differential equation that has a straight line as a solution JO - Differencialʹnye uravneniâ PY - 1971 SP - 1813 EP - 1818 VL - 7 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1971_7_10_a6/ LA - ru ID - DE_1971_7_10_a6 ER -