%0 Journal Article %A S. N. Kruzhkov %T Linear and nonlinear parabolic systems on the plane %J Doklady Akademii Nauk %D 1969 %P 510-513 %V 187 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_187_3_a7/ %G ru %F DAN_1969_187_3_a7