Abed, Haider J., N. M. Din, M. H. Al-Mansoori, F. Abdullah, Noora Salim, and Hilal A. Fadhil. “A New FWM Reduction Technique Based on Damping Selective Wavelengths”. Ukrainian Journal of Physics 58, no. 10 (October 11, 2018): 956. Accessed April 19, 2024. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018373.