%0 Journal Article %A E. Yu. Panov %T On the structure of weak solutions of the Riemann problem for a degenerate nonlinear diffusion equation %J Contemporary Mathematics. Fundamental Directions %D 2023 %P 676-684 %V 69 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2023_69_4_a7/ %G ru %F CMFD_2023_69_4_a7