%0 Journal Article %A T. V. Burchuladze %T On an approximate solution of boundary value problems for a certain class of elliptic systems %J Differencialʹnye uravneniâ %D 1965 %P 1231-1245 %V 1 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1965_1_9_a8/ %G ru %F DE_1965_1_9_a8