K. Al-Youzbakey, قتیبة, S. Al-Dabbagh, and سالم, “Geochemistry of Phosphorite and Associated Rocks of Akashat Formation (Middle Paleocene) in Akashat Mine, Iraqi Western Desert. Part II: Trace Elements”, INJES, vol. 19, no. 2, pp. 100–118, Jun. 2025.