%0 Journal Article %A A. V. Bitsadze %T On structural properties of solutions of hyperbolic systems of partial differential equations of the first order %J Matematičeskoe modelirovanie %D 1994 %P 22-31 %V 6 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM_1994_6_6_a4/ %G ru %F MM_1994_6_6_a4