Rasheed, Sufian, Niamat Ullah, and Amir Ullah. “Chemical Analysis of Some Pakistani Portland Cement Clinker and Their Compliance With ASTM Standards”. European Journal of Chemistry 11, no. 3 (September 30, 2020): 194–197. Accessed May 3, 2024. https://www.eurjchem.com/index.php/eurjchem/article/view/1980.