%0 Journal Article %A I. I. Markus %T Asymptotic representation of the solution of a mixed problem for a differential equation of hyperbolic type with a small parameter %J Differencialʹnye uravneniâ %D 1967 %P 294-314 %V 3 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1967_3_2_a12/ %G ru %F DE_1967_3_2_a12