"1999-08-17" . . . "1999-08-17" . "International Fuzzy Systems Association world congress (08 ; 1999 ; Taipei, Taiwan)" . "1999-08-20" . "International Fuzzy Systems Association world congress (08 ; 1999 ; Taipei, Taiwan)" . "IFSA '99" . . . "IFSA'99" . "1999-08-20" . "IFSA 1999" . .