Razavi Hajiagha, Seyed, Shide Hashemi, and Edmundas Zavadskas. 2013. “A Complex Proportional Assessment Method for Group Decision Making in an Interval-Valued Intuitionistic Fuzzy Environment”. Technological and Economic Development of Economy 19 (1), 22-37. https://doi.org/10.3846/20294913.2012.762953.