Xu, Zeshui, and Enrique Herrera-Viedma. “Advances in FUZZY Techniques and Applications: In Occasion of Lotfi Zadeh 100 Birth Anniversary”. Technological and Economic Development of Economy 27, no. 2 (April 12, 2021): 280-283. Accessed July 2, 2024. https://aviation.vgtu.lt/index.php/TEDE/article/view/14582.