%0 Journal Article %A T. A. Samarskaya %T Absolute and uniform convergence of expansions in root functions of a nonlocal boundary value problem of the first kind %J Differencialʹnye uravneniâ %D 1989 %P 1155-1160 %V 25 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1989_25_7_a7/ %G ru %F DE_1989_25_7_a7