%0 Journal Article %A A. Yu. Kolesov %A E. F. Mishchenko %T On the mechanism of destruction of invariant torus of Van-der Pole relaxation system with harmonic influence on the slow variable %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1991 %P 197-204 %V 200 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1991_200_a17/ %G ru %F TM_1991_200_a17