D. O. Abdul-Rahim and S. Q. Mawlud, “Optimization of the Geometrical Parameters for the Output Mirror in a He-Ne Laser”, SJUOZ, vol. 1, no. 1, pp. 383–387, Jun. 2013, Accessed: Dec. 20, 2025. [Online]. Available: https://www.sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/139