A hybrid method for optimizing a complex system reliability Wafae El Alem, Abdelkhalak El Hami, Rachid Ellaia and Mohammed Souissi Int. J. Simul. Multidisci. Des. Optim., 4 2 (2010) 57-62 Published online: 21 July 2011 DOI: 10.1051/ijsmdo/2010008