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2. The initial trace of a solution of the porous medium equation;Aronson;Trans. Amer. Math. Soc.,1983
3. P. Bénilan, Evolution Equations and Accretive Operators, Lectures Notes Taken at the University of Kentucky, Spring 1981.
4. Solutions of the Porous Medium Equation in RN under optimal conditions on the initial data;Bénilan;Indiana Univ. Math. J.,1984
5. Nonlinear parabolic equations involving measures as initial conditions;Brezis;J. Math. Pures Appl.,1983