TY - JOUR AU - N. A. Lyul'ko TI - Instability of a nonlinear system of two oscillators under main and combination resonances JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 2015 SP - 56 EP - 73 VL - 55 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_2015_55_1_a5/ LA - ru ID - ZVMMF_2015_55_1_a5 ER -