%0 Journal Article %A V. A. Malovichko %T Solvability of boundary value problems for fourth order systems of differential equations %J Matematičeskie zametki %D 1991 %P 105-110 %V 50 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1991_50_2_a12/ %G ru %F MZM_1991_50_2_a12