“Crystallized Ammonium Alum and Recovery of Ammonium Alum: Urea DES from Cellulose/DES Solution” (2021) Al-Nahrain Journal of Science, 24(1), pp. 20–23. Available at: https://anjs.edu.iq/index.php/anjs/article/view/2367 (Accessed: 15 April 2025).