Tang, J., Xin, X. and Xie, X. (2018) “CHARACTERIZATIONS OF ORDERED SEMIHYPERGROUPS BASED ON ORDERED FUZZY POINTS”, Italian Journal of Pure and Applied Mathematics, 39, pp. 290–311. Available at: https://journals.uniurb.it/index.php/ijpam/article/view/6929 (Accessed: 7 October 2026).