%0 Journal Article %A A. P. Soldatov %T A general boundary value problem for elliptic systems %J Doklady Akademii Nauk %D 1990 %P 539-543 %V 311 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_311_3_a5/ %G ru %F DAN_1990_311_3_a5