%0 Journal Article %A I. T. Kiguradze %T Solvability of the de la Vall\'ee-Poussin boundary value problem %J Differencialʹnye uravneniâ %D 1985 %P 391-398 %V 21 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_3_a3/ %G ru %F DE_1985_21_3_a3