FOGARASI, Szabolcs, et al. “EVALUATION OF MASS TRANSFER PARAMETERS FOR UREA DISSOLUTION IN FIXED-BED WITH DOWNWARD FLOW OF WATER”. Studia Universitatis Babeș-Bolyai Chemia, vol. 61, no. 3, Sept. 2023, pp. 495-04, https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8372.