%0 Journal Article %A V. N. Gol'dberg %T Discontinuous solutions of nonlinear mixed problems for almost linear hyperbolic systems on the plane %J Doklady Akademii Nauk %D 1970 %P 532-535 %V 195 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_195_3_a4/ %G ru %F DAN_1970_195_3_a4