%0 Journal Article %A K. A. Kasymov %A B. M. Kadykenov %T The Cauchy problem with initial jump for singularly perturbed linear hyperbolic equations degenerating into a first-order equation %J Differencialʹnye uravneniâ %D 1983 %P 2114-2122 %V 19 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_12_a11/ %G ru %F DE_1983_19_12_a11