%0 Journal Article %A E. Yu. Panov %T On the theory of entropy sub- and supersolutions of nonlinear degenerate parabolic equations %J Contemporary Mathematics. Fundamental Directions %D 2023 %P 306-331 %V 69 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2023_69_2_a8/ %G ru %F CMFD_2023_69_2_a8