Discontinuous "Viscosity" Solutions of a Degenerate Parabolic Equation
Michiel Bertsch, Roberta Dal Passo, Maura Ughi · Transactions of the American Mathematical Society · 1990
Michiel Bertsch, Roberta Dal Passo, Maura Ughi, Discontinuous "Viscosity" Solutions of a Degenerate Parabolic Equation, Transactions of the American Mathematical Society, Vol. 320, No. 2 (Aug., 1990), pp. 779-798