Younis, Taghreed, تغرید, Musab Mohammed, and مصعب. “Study of Optical Modulation of the Bipolar Exposed Transistor Using Semiconductor Laser”. Journal of Education and Science (JES) 21, no. 4 (December 1, 2008): 84–98. Accessed August 4, 2025. https://rjps.uomosul.edu.iq/index.php/edusj/article/view/18243.