%0 Journal Article %A S. Ya. Yakubov %T Solvability ``in the large'' of the Cauchy problem for a first order quasi- linear hyperbolic system %J Doklady Akademii Nauk %D 1971 %P 793-796 %V 196 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_196_4_a16/ %G ru %F DAN_1971_196_4_a16