Tongjundee, Pattira, and Varayut Boonyasri. “Bivariate Quadratic Transformations of Quasi-Copulas”. Thai Journal of Mathematics 21, no. 3 (September 30, 2023): 553–561. Accessed May 8, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1526.