hal-00243982v1Communication dans un congrès Olivier Ley. WEAK SOLUTIONS FOR DISLOCATION TYPE EQUATIONS Y. Giga, K. Ishii, S. Koike, T. Ozawa, N. Yamada. International Conference for the 25th Anniversary of Viscosity Solutions, Jun 2007, Tokyo, Japan. Gakkotosho Tokyo Japan, 30, pp.117-132, 2008, Gakuto International Series, Mathematical Sciences and Applications