Fuzzy implicative ideals in BCK-algebras. - Samy M. Mostafa (Fuzzy Sets Syst., 1997)

A Study on Groupoids, Ideals and Congruences via Cubic Sets. - Jeong-Gon Lee; Samy M. Mostafa; Jong-Il Baek; Sang Hyeon Han; Kul Hur (Axioms, 2022)

Cubic Picture Fuzzy Structures of Medial Ideal on BCI-Algebras. - Kul Hur; Sang Hyeon Han; Samy M. Mostafa; Mostafa A. Hassan; Elaf Raad Hasan (Int. J. Fuzzy Log. Intell. Syst., 2025)