%0 Journal Article %A A. G. Ramm %T An investigation of the Green's function of a second order differential equation in regions with infinite boundary %J Differencialʹnye uravneniâ %D 1969 %P 1509-1516 %V 5 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_8_a17/ %G ru %F DE_1969_5_8_a17