Alkhaykanee, M. H., and S. I. Al-Dulaimi. “Biostratigraphy of Euphrates, Dhiban, and Jeribe Formations in Ajil Oil Field, Salah Al-Deen Governorate, Central Iraq”. Iraqi Journal of Science, Vol. 60, no. 2, Feb. 2019, pp. 263-76, https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/587.