%0 Journal Article %A V. D. Repnikov %A S. D. Ăˆidel'man %T Necessary and sufficient conditions for establishing a solution to the Cauchy problem %J Doklady Akademii Nauk %D 1966 %P 298-301 %V 167 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_167_2_a11/ %G ru %F DAN_1966_167_2_a11