%0 Journal Article %A V. A. Churikov %T Conditions for the existence of the Green's function of a boundary value problem %J Differencialʹnye uravneniâ %D 1966 %P 1184-1192 %V 2 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1966_2_9_a5/ %G ru %F DE_1966_2_9_a5