A. S, Zeravan, Saleem I. Shahbaz, and Amer M. AL Maa. “Numerical Taxonomy for Genus Crataegus L. (Rosaceae) in North of Iraq”. Rafidain Journal of Science 18, no. 2 (April 1, 2007): 1–15. Accessed September 29, 2025. https://jamh.uomosul.edu.iq/index.php/rsci/article/view/46871.