%0 Journal Article
%A G. A. Voropaeva
%T The theorem of M.\,V.~Keldysh on $n$-fold completeness, and the convergence of the solution of a~Cauchy difference problem
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1970
%V 25
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1970_25_3_a18/
%G ru
%F RM_1970_25_3_a18