Jitti Jungwattanakit Manop Reodecha Paveena Chaovalitwongse Frank Werner A comparison of scheduling algorithms for flexible flow shop problems with unrelated parallel machines, setup times, and dual criteria. 358-378 2009 36 Computers & OR 2 http://dx.doi.org/10.1016/j.cor.2007.10.004 db/journals/cor/cor36.html#JungwattanakitRCW09