Made available in DSpace on 2022-04-28T18:57:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-08-29; This paper presents preliminary results found by a hybrid heuristic applied to solve the Multi-Level Capacitated Lot Sizing Problem (MLCLSP). The proposed method combines a multi-population genetic algorithm and fix-and-optimize heuristic. These methods are also integrated to a mathematical programming ...