%0 Journal Article %A V. P. Titsky %T On the method of $R$-functions and the method of integral equations in the solution of problems in mathematical physics %J Differencialʹnye uravneniâ %D 1991 %P 2147-2151 %V 27 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_12_a16/ %G ru %F DE_1991_27_12_a16