%0 Journal Article %A V. V. Aleksandrov %A T. B. Alexandrova %A I. S. Konovalenko %A K. V. Tikhonova %T Perturbed stable systems on a plane.~II %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2017 %P 53-57 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2017_1_a8/ %G ru %F VMUMM_2017_1_a8