%0 Journal Article %A M. E. Lerner %T Solvability of a boundary value problem for hyperbolic equations %J Doklady Akademii Nauk %D 1988 %P 546-550 %V 300 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_300_3_a6/ %G ru %F DAN_1988_300_3_a6