Mehdi Salih, Salah, and Radwan Mohammed Al-Omary. “Commuting With Higher Centralizers on Prime Rings”. Al-Nahrain Journal of Science 29, no. 3 (September 15, 2026): 242–248. Accessed October 17, 2026. https://anjs.edu.iq/index.php/anjs/article/view/3520.