%0 Journal Article %A V. N. Abrashin %A P. A. Vakulchik %T Difference schemes of first order accuracy for quasilinear hyperbolic systems.~I %J Differencialʹnye uravneniâ %D 1973 %P 1085-1098 %V 9 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_6_a10/ %G ru %F DE_1973_9_6_a10