TY - JOUR AU - A. G. Katranov TI - The asymptotic behavior of oscillating solutions of the equation $\ddot x+f(t,\,x)g(\dot x)=0$ JO - Differencialʹnye uravneniâ PY - 1972 SP - 1111 EP - 1115 VL - 8 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1972_8_6_a20/ LA - ru ID - DE_1972_8_6_a20 ER -