Nadeem, A. H., J. Xu, M. Nazim, M. Hashim, and M. K. Javed. “Supplier Selection and Evaluation Using Restricting Weights Method in Presence of Dual Factor under Fuzzy Environment”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 13, no. 1, Jan. 2014, pp. 124-38, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/1754.