%0 Journal Article %A F. E. Lomovtsev %T Solvability of boundary value problems for certain differential-operator equations of even order %J Differencialʹnye uravneniâ %D 1980 %P 1581-1586 %V 16 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_9_a3/ %G ru %F DE_1980_16_9_a3