%0 Journal Article %A V. A. Il'in %A E. I. Moiseev %T An a priori estimate for the solution of a problem associated with a nonlocal boundary value problem of the first kind %J Differencialʹnye uravneniâ %D 1988 %P 795-804 %V 24 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1988_24_5_a6/ %G ru %F DE_1988_24_5_a6