Abed, Haider J., N. M. Din, M. H. Al-Mansoori, F. Abdullah, Noora Salim, and Hilal A. Fadhil. 2018. “A New FWM Reduction Technique Based on Damping Selective Wavelengths”. Ukrainian Journal of Physics 58 (10):956. https://doi.org/10.15407/ujpe58.10.0956.