Euntai Kim Witold Pedrycz Information granulation as a basis of fuzzy modeling. 123-148 2007 18 Journal of Intelligent and Fuzzy Systems 2 http://iospress.metapress.com/openurl.asp?genre=article&issn=1064-1246&volume=18&issue=2&spage=123 db/journals/jifs/jifs18.html#KimP07