%0 Journal Article %A M. G. Dzhavadov %T A mixed problem for a hyperbolic equation with a small parameter multiplying the highest derivatives %J Doklady Akademii Nauk %D 1963 %P 790-793 %V 152 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_152_4_a4/ %G ru %F DAN_1963_152_4_a4