TY - JOUR AU - M. I. Gil' TI - Two-sided estimates of solutions of a class of nonlinear differential equations JO - Differencialʹnye uravneniâ PY - 1985 SP - 891 EP - 894 VL - 21 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1985_21_5_a21/ LA - ru ID - DE_1985_21_5_a21 ER -