2The Delphi method: Techniques and Applications[M]. Reading, MA: Addison-Wesley, 1975.
3Yousuf M I. Using experts' opinions through Delphi technique[J]. Practical Assessment, Research & Evaluation, 2007, 12(4): 1-8.
4Kwong C K, Ip W H, Chan J W K. Combining scoring method and fuzzy expert systems approach to supplier assessment: a case study[J]. Integrated Manufacturing Systems, 2002, 13(7): 512-519.
5Saaty T L. How to make a decision: the analytic hierarchy process[J]. European journal of opera- tional research, 1990, 48(1): 9-26.
6Saaty T L. Decision making with the analytic hierarchy process[J]. International Journal of Services Sciences, 2008, 1(1): 83-98.
7Saaty T L. Analytic Hierarchy Process[M]. Encyclopedia of Operations Research and Management Science. Springer US, 2013: 52-64.