A. Ayad, “Geochemical analysis of the Maastrichtian phosphate stratum ‘Couche 3’ and its exploitability in the Sidi Daoui mine (Ouled Abdoun, Morocco)”, Iran J Earth Sci, vol. 17, no. 1, pp. 1–7, Jan. 2025, doi: 10.57647/j.ijes.2025.1701.01.