Seoud, Mohamed Abdel-Azim, Eliwa Mohamed Roshdy, and Mohamed Saied AboShady. 2021. “On Strongly *-Graphs: On Strongly *-Graphs”. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences 54 (2):179–195. http://ppaspk.org/index.php/PPAS-A/article/view/248.