Thamer Salman, Zeena, and Hadi M. A. Abood. 2021. “Crystallized Ammonium Alum and Recovery of Ammonium Alum: Urea DES from Cellulose DES Solution”. Al-Nahrain Journal of Science 24 (1): 20-23. https://anjs.edu.iq/index.php/anjs/article/view/2367.