%0 Journal Article %A N. A. Lyul'ko %T Instability of a nonlinear system of two oscillators under main and combination resonances %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 2015 %P 56-73 %V 55 %N 1 %U http://geodesic.mathdoc.fr/item/ZVMMF_2015_55_1_a5/ %G ru %F ZVMMF_2015_55_1_a5