%0 Journal Article %A V. I. Arnol'd %T Remarks on the perturbation theory for problems of Mathieu type %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1983 %P 215-233 %V 38 %N 4 %U http://geodesic.mathdoc.fr/item/RM_1983_38_4_a10/ %G en %F RM_1983_38_4_a10