%0 Journal Article %A S. S. Kharibegashvili %T On a Goursat-type problem for a class of systems of second-order equations of hyperbolic type %J Differencialʹnye uravneniâ %D 1982 %P 152-166 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_1_a17/ %G ru %F DE_1982_18_1_a17