T. Younsi, H., M. Mohammed Hamudate, and L. A. A. Al-Helaly. “Effect of Aerobic or Stress Exercise in Response of Some Antioxidants Parameters in Blood Serum”. Al-Rafidain Journal For Sport Sciences, vol. 14, no. 47, Apr. 2008, pp. 33-45, doi:10.33899/rajsport.2008.6175.