%0 Journal Article %A V. G. Khriptun %T Functions analytical with respect to a hyperbolic operator involving two independent variables %J Doklady Akademii Nauk %D 1958 %P 26-28 %V 122 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1958_122_1_a5/ %G ru %F DAN_1958_122_1_a5