Selaiman Ali Al-Hory, Okla. “Biorhythm And Iraqi Records In Athletics”. Al-Rafidain Journal For Sport Sciences 13, no. 45 (December 1, 2007): 143–159. Accessed November 17, 2025. https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50638.