Khan, Muhammad Bilal, Muhammad Aslam Noor, and Khalida Inayat Noor. “On Some Characterization of Preinvex Fuzzy Mappings”. Earthline Journal of Mathematical Sciences 5, no. 1 (July 21, 2020): 17-42. Accessed November 22, 2024. https://earthlinepublishers.com/index.php/ejms/article/view/210.