Al-Qdah*, M.T., H.A. Abdul-Rashid, B.M. Ali, and M. Khazani. 2018. “Effect of Optical Beat Interference in SCM/WDM Optical Networks in Presence of FWM”. CURRENT APPLIED SCIENCE AND TECHNOLOGY 5 (3). Bangkok, Thailand:552-58. https://li01.tci-thaijo.org/index.php/cast/article/view/145551.