%0 Journal Article %A S. Chu %A I. Kliakhandler %A A. Kurganov %T On the Gelfand problem and viscosity matrices for two-dimensional hyperbolic systems of conservation laws %J Sibirskie èlektronnye matematičeskie izvestiâ %D 2024 %P B78-B91 %V 21 %N 2 %U http://geodesic.mathdoc.fr/item/SEMR_2024_21_2_a74/ %G en %F SEMR_2024_21_2_a74