Majid Nojavan Mehdi Ghazanfari A fuzzy ranking method by desirability index. 27-34 2006 17 Journal of Intelligent and Fuzzy Systems 1 http://iospress.metapress.com/openurl.asp?genre=article&issn=1064-1246&volume=17&issue=1&spage=27 db/journals/jifs/jifs17.html#NojavanG06