%0 Journal Article %A Yu. I. Shokin %T The method of the first differential approximation in the theory of difference schemes for hyperbolic systems of equations %J Informatics and Automation %D 1973 %P 66-84 %V 122 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1973_122_a3/ %G ru %F TRSPY_1973_122_a3