Z. Thamer Salman and H. M. A. Abood, “Crystallized Ammonium Alum and Recovery of Ammonium Alum: Urea DES from Cellulose/DES Solution”, Al-Nahrain J. Sci., vol. 24, no. 1, pp. 20–23, Mar. 2021, Accessed: May 22, 2026. [Online]. Available: https://mail.anjs.edu.iq/index.php/anjs/article/view/2367