“Theoretical Analysis of Coupling Constant, Longitudinal Modes, and Threshold Gain for Coupled-Cavity Semiconductor Lasers” (2009) Journal of Engineering and Sustainable Development, 13(3), pp. 1–12. Available at: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1522 (Accessed: 3 July 2024).