Chia-Feng Juang Simultaneous structure and parameter design of fuzzy systems by hybridizing multi-group genetic algorithm and particle swarm optimization. 83-93 2006 17 Journal of Intelligent and Fuzzy Systems 2 http://iospress.metapress.com/openurl.asp?genre=article&issn=1064-1246&volume=17&issue=2&spage=83 db/journals/jifs/jifs17.html#Juang06