Mueannak, Sombat, and Suthichai Noppanakeepong. “Study of Four-Wave Mixing Effect in DWDM Transmission System with Channel Space 50 GHz”. Engineering and Applied Science Research 34, no. 3 (June 6, 2012): 321–331. accessed August 31, 2026. https://ph01.tci-thaijo.org/index.php/easr/article/view/1824.