%0 Journal Article %A È. G. Khalikov %T Certain boundary value problems with conditions at infinity %J Differencialʹnye uravneniâ %D 1970 %P 435-442 %V 6 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_3_a5/ %G ru %F DE_1970_6_3_a5