%0 Journal Article %A L. M. Vorob'ev %T Applicability of a method of Chaplygin to a system of differential equations of a special form %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1965 %V 20 %N 4 %U http://geodesic.mathdoc.fr/item/RM_1965_20_4_a7/ %G ru %F RM_1965_20_4_a7