Concave (L, M)-fuzzy interior operators and (L, M)-fuzzy hull operators. - Hu Zhao; Xia Hu; Osama Rashed Sayed; E. El-Sanousy; Y. H. Ragheb Sayed (Comput. Appl. Math., 2021)

On separation axioms in (L, M)-fuzzy convex structures. - Hu Zhao; Osama Rashed Sayed; E. El-Sanousy; Y. H. Ragheb Sayed; Gui-Xiu Chen (J. Intell. Fuzzy Syst., 2021)

Multi-Granulation Double Fuzzy Rough Sets. - A. A. Abdallah; Osama Rashed Sayed; E. El-Sanousy; Y. H. Ragheb Sayed; M. N. Abu-Shugair; Salahuddin Salahuddin (Symmetry, 2023)