Citation: Ep. Avgerinos, ON PERIODIC-SOLUTIONS OF MULTIVALUED NONLINEAR EVOLUTION-EQUATIONS, Journal of mathematical analysis and applications, 198(3), 1996, pp. 643-656
Citation: Ep. Avgerinos et Ns. Papageorgiou, ON THE EXISTENCE OF EXTREMAL PERIODIC-SOLUTIONS FOR NONLINEAR PARABOLIC PROBLEMS WITH DISCONTINUITIES, Journal of differential equations, 132(1), 1996, pp. 179-201