%0 Journal Article %A V. S. Blinchevskii %T Existence of a null Chaplygin approximation for a solution of the generalized Cauchy problem %J Matematičeskie zametki %D 1971 %P 447-452 %V 10 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1971_10_4_a8/ %G ru %F MZM_1971_10_4_a8