Al-Youzbakey, K., قتیبة, S. Al-Dabbagh, and سالم. “The Chemical Formula of Francolite in the Phosphorite of Akashat Formation from X-Ray Diffraction Analysis”. Iraqi National Journal of Earth Science (INJES), vol. 18, no. 2, June 2025, pp. 61-88, doi:10.33899/earth.2018.159265.