Evolution equations generated by subdifferentials in the dual space of $(H^1(\Omega))$
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Mathématiques, UFR des Sciences et de la Technologie, Universite, Paris 12-Val de Mauve, 94000 Creteil
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Department of Mathematics, Faculty of Education, Chiba University, 1-33 Yayoi-chō, Inage-ku, Chiba, 263–8522