Darmanto, P. S., I. H. Muzakki, I. M. Astina, F. B. Juangsa, A. Amalia, and A. Syahlan. “New Method of Materials Flow Calculation for Double-String SLCI Type Cement Plant (Part 1: The Whole Clinker Plant)”. Journal of Engineering and Technological Sciences, vol. 53, no. 5, Nov. 2021, p. 210506, doi:10.5614/j.eng.technol.sci.2021.53.5.6.