Amir, Amir Kamal. “Seputar Ideal-Ideal Dalam Gelanggang Operator Differensial”. Jurnal Matematika, Statistika dan Komputasi 13, no. 1 (February 5, 2018): 66-70. Accessed April 6, 2025. http://334012.libg.asia/index.php/jmsk/article/view/3485.