TY - JOUR AU - E. Yu. Panov TI - On the theory of entropy sub- and supersolutions of nonlinear degenerate parabolic equations JO - Contemporary Mathematics. Fundamental Directions PY - 2023 SP - 306 EP - 331 VL - 69 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2023_69_2_a8/ LA - ru ID - CMFD_2023_69_2_a8 ER -