Meng, Fanyong, Jia Tang, and Shaolin Zhang. “Interval Linguistic Fuzzy Decision Making in Perspective of Preference Relations”. Technological and Economic Development of Economy 25, no. 5 (July 19, 2019): 998-1015. Accessed December 6, 2019. https://journals.vgtu.lt/index.php/TEDE/article/view/10548.