Multi-Objective Particle Swarm Optimizers: A Survey of the State-of-the-Art. Reyes-Sierra, M. and Coello Coello, C. A. International Journal of Computational Intelligence Research, 2(3):287--308, 2006.
bibtex   
@article{Reyes06,
   author = {Margarita Reyes-Sierra and Carlos A. {Coello Coello}},
   title = {Multi-{O}bjective {P}article {S}warm {O}ptimizers: {A} {S}urvey
of the {S}tate-of-the-{A}rt},
   journal = {International Journal of Computational Intelligence Research},
   volume = {2},
   number = {3},
   pages = {287--308},
   year = {2006}
}
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