Jian Zhou Jim Browne Xuan Zhou Paul Folan Qing Li Tianyuan Xiao Fuzzy performance model construction & formalization: its use/reuse in the Economic View. 354-359 2007 SMC http://dx.doi.org/10.1109/ICSMC.2007.4413694 conf/smc/2007 db/conf/smc/smc2007.html#ZhouBZFLX07