Hasan, M. M., S. A. Bader, M. A. M. Ali, W. R. Abdellah, and G. S. Abdelhaffez. “Linear Programming As a Tool to Design the Mix of Cement Plant Raw Materials”. Rudarsko-geološko-Naftni Zbornik, vol. 37, no. 4, Aug. 2022, pp. 109-17, doi:10.17794/rgn.2022.4.9.