Shinobu Ohtani Hiroaki Kikuchi Ronald R. Yager Shohachiro Nakanishi Fuzzy system identification for composite operation and fuzzy relation by genetic algorithms. 289-295 1997 conf/kes/1997-1 KES (1) http://dx.doi.org/10.1109/KES.1997.616924 db/conf/kes/kes1997-1.html#OhtaniKYN97