TY - JOUR AU - S. M. Shaova TI - Cycles of a differential equation with polynomials of the third degree JO - Differencialʹnye uravneniâ PY - 1983 SP - 720 EP - 722 VL - 19 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_4_a30/ LA - ru ID - DE_1983_19_4_a30 ER -