Hajiagha, S. H. R., S. S. Hashemi, E. K. Zavadskas, and H. Akrami. “Extensions of LINMAP Model for Multi Criteria Decision Making With Grey Numbers”. Technological and Economic Development of Economy, vol. 18, no. 4, Dec. 2012, pp. 636-50, doi:10.3846/20294913.2012.740518.