“Biostratigraphy of Yamama Formation at Luhais and Rifaee Oilfields, Southern Iraq”. Iraqi Journal of Science 63, no. 6 (June 30, 2022): 2619–2629. Accessed July 26, 2025. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/4993.