5J.J. Zhang, D.S. Wu, D.L. Olson, The Method of Grey Related Analysis to Multiple Attribute Decision Making Problems with Interval Numbers, Mathematical and Computer Modeling,2005.
6Guo-Dong Li, Daisuke Yamaguchi and Masatake Nagai,A Grey- based Decision-making Approach to the Supplier Selection Problem? Mathematical and Computer Modeling?2006.
7Holt GD. Which Contractor Selection Methodology. International Journal of Project Management, 1998.
8C.K.Prahalad and Gary.Hamel. The Core Competence of the Corporation [J].Harvard Business Review,1990.
9C.K.Prahalad and Gary Hamel.The core competence of corporation, Harvard Business Review,May-June 1990.79-91.
10Steven Walsh, Jonatha D. Linton.The measurement of technical competencies.Journal of High Technology Management Research 13(2002):63-86.