TY - JOUR AU - G. A. Voropaeva TI - The theorem of M. V. Keldysh on $n$-fold completeness, and the convergence of the solution of a Cauchy difference problem JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1970 VL - 25 IS - 3 UR - http://geodesic.mathdoc.fr/item/RM_1970_25_3_a18/ LA - ru ID - RM_1970_25_3_a18 ER -