Titi Udjiani SRRM, Nikken Prima Puspita, and Suryoto. “Eksistensi Invers Moore Penrose Diperumum Elemen Normal Diperumum Pada Ring Dengan Involusi”. Limits: Journal of Mathematics and Its Applications 20, no. 1 (March 15, 2023): 107–112. Accessed January 25, 2026. https://journal.its.ac.id/index.php/limits/article/view/5496.