TY - JOUR AU - Yu. S. Kolesov AU - M. A. Krasnosel'skii TI - Lyapunov stability and equations with concave operators JO - Doklady Akademii Nauk PY - 1962 SP - 1217 EP - 1220 VL - 145 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1962_145_6_a6/ LA - ru ID - DAN_1962_145_6_a6 ER -