%0 Journal Article %A N. G. Marchuk %T On the existence of solutions of a mixed problem for the vector wave equation %J Doklady Akademii Nauk %D 1980 %P 546-549 %V 252 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_252_3_a7/ %G ru %F DAN_1980_252_3_a7