One aspect on Bellman's equation to optimal control theory. Lahrech, Samir; Addou, Ahmed — 2004 Applied Mathematics E-Notes [electronic only]
Common fixed points for Lipschitzian semigroups. Lahrech, Samir; Mbarki, Abderrahim; Ouahab, Abdelmalek — 2006 Electronic Journal of Differential Equations (EJDE) [electronic only]
Uniformly ergodic theorem for commuting multioperators. Lahrech, Samir; Mbarki, Abderrahim; Ouahab, Abdelmalek; Rais, Said — 2006 Electronic Journal of Differential Equations (EJDE) [electronic only]
Some remarks about strictly pseudoconvex functions with respect to the Clarke-Rockafellar subdifferential. Samir, Lahrech; Abdessamad, Jaddar; Abdelmalek, Ouahab; Abderrahim, Mbarki — 2006 Lobachevskii Journal of Mathematics