Simulation of the Portevin-Le Chatelier effect using polycrystal plasticity S. Kok, A.J. Beaudoin, D.A. Tortorelli, M. Lebyodkin, L. Kubin and C. Fressengeas J. Phys. IV France, 105 (2003) 191-197 DOI: 10.1051/jp4:20030187