5Satty T L. The Analytic Hierarchy Process[M]. New York: McGraw-Hill, 1980.
6Ling Wang, Jian Chu, Jun Wu. Selection of optimun maintenance strategies based on a fuzzy analytic hierarchy process[J]. International Journal of Production Economics, 2007, 107(1): 151-163.
7Leung L C, Cao D. On Consistency and Ranking of Alternatives in Fuzzy AHP[J]. European Journal of Operational Research, 2000, 124(1): 102-113.
