%0 Journal Article %A V. I. Rykov %T Regularization of a system of boundary value problems %J Differencialʹnye uravneniâ %D 1983 %P 901-904 %V 19 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_5_a17/ %G ru %F DE_1983_19_5_a17