Iqbal, S. J., M. Yousuf Hussain, A. M. S. Ramzia, and H. B. Ahmad. “ALL OPTICAL TWO CHANNEL PSK COMMUNICATION”. Journal of Research (Science) 17, no. 1 (July 10, 2006): Pages: 01–07. Accessed July 15, 2025. http://jorscience.com/index.php/JRS/article/view/227.