Ingo Renners Adolf Grauel Evolutionary System Identification via Descriptive Takagi Sugeno Fuzzy Systems. 474-485 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2810&spage=474 2003 conf/ida/2003 IDA db/conf/ida/ida2003.html#RennersG03