Anggoro, D. D. ., L. . Buchori, N. . Rinaldi, S. . Silviana, B. U. Le Monde, M. F. . Putra, and M. M. . Zainol. “Hybrid Ultrasound and Advanced Oxidation Process Regeneration of Spent FCC Catalysts: Optimization and Their Catalytic Performance”. Journal of Engineering and Technological Sciences, vol. 58, no. 2, Jan. 2026, pp. 227-42, doi:10.5614/j.eng.technol.sci.2026.58.2.6.