%0 Journal Article %A G. A. Voropaeva %A V. P. Maslov %T M. V. Keldysh's multiple completeness and the uniqueness of the solution of the corresponding Cauchy problem %J Funkcionalʹnyj analiz i ego priloženiâ %D 1970 %P 10-17 %V 4 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1970_4_2_a1/ %G ru %F FAA_1970_4_2_a1