Schechter, Ervin. “The Generalized Solution of a Nonlinear Degenerate Parabolic Equation and Its Numerical Computation”. Anal. Numér. Théor. Approx. 13, no. 1 (February 1, 1984): 73–93. Accessed May 19, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1984-vol13-no1-art9.