TY - JOUR AU - R. G. Grabovskaya TI - The asymptotic behavior of the solution of a system of two first order nonlinear differential equations JO - Differencialʹnye uravneniâ PY - 1975 SP - 639 EP - 644 VL - 11 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1975_11_4_a4/ LA - ru ID - DE_1975_11_4_a4 ER -