%0 Journal Article %A S. N. Kruzhkov %T The Cauchy problem in the large for non-linear equations and for certain first-order quasilinear systems with several variables %J Doklady Akademii Nauk %D 1964 %P 743-746 %V 155 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_155_4_a5/ %G ru %F DAN_1964_155_4_a5