TY - JOUR AU - Slimani, Hachem AU - Radjef, Mohammed Said TI - Fritz John type optimality and duality in nonlinear programming under weak pseudo-invexity JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2015 SP - 451 EP - 472 VL - 49 IS - 3 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ro/2014046/ DO - 10.1051/ro/2014046 LA - en ID - RO_2015__49_3_451_0 ER -