Cheah, C. L., B. Mohd Ali, M. R. Mukerjee, V. Prakash, and S. Selvakennedy. “A Scheduling Algorithm for WDM Optical Networks”. Malaysian Journal of Computer Science, vol. 14, no. 1, June 2001, pp. 46-57, https://ejournal.um.edu.my/index.php/MJCS/article/view/5851.