Qader, N. H., N. H. Meikha, and B. M. Ali. “Effect of He-Ne Laser on Blood Serum Testosterone and Testicular Tissue in Adult Male Rat”. Science Journal of University of Zakho, vol. 4, no. 1, June 2016, pp. 25-31, https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/301.