Yanlai Li Jiafu Tang Xinggang Luo Jie Xu An integrated method of rough set, Kano's model and AHP for rating customer requirements' final importance. 7045-7053 2009 36 Expert Syst. Appl. 3 http://dx.doi.org/10.1016/j.eswa.2008.08.036 db/journals/eswa/eswa36.html#LiTLX09