I. Abdullah, A., and M. S. Mohammed. “The Condition Requirements for Optical Bistability in Semiconductor Laser under Injection Locking”. Journal of Education and Science 21, no. 3 (September 1, 2008): 82–93. Accessed September 21, 2025. https://stats.uomosul.edu.iq/index.php/edusj/article/view/41661.