%0 Journal Article %A S. G. Ovsepyan %T The first boundary-value problem for certain differential equations with constant coefficients %J Doklady Akademii Nauk %D 1964 %P 524-527 %V 155 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_155_3_a8/ %G ru %F DAN_1964_155_3_a8