Teresa Bernarda Ludermir Andreas König André Carlos Ponce Leon Ferreira de Carvalho Special Issue HIS 2007. 57-58 2008 5 Int. J. Hybrid Intell. Syst. 2 http://iospress.metapress.com/content/f0513640r6806pxv/ db/journals/ijhis/ijhis5.html#LudermirKC08