%0 Journal Article %A V. K. Romanko %T Mixed boundary value problems for a system of equations %J Doklady Akademii Nauk %D 1986 %P 47-50 %V 286 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1986_286_1_a9/ %G ru %F DAN_1986_286_1_a9