Paula B. Harboe and  Edilson da Silva and  José R. Souza,  Analysis of FWM Penalties in DWDM Systems Based on G.652, G.653, and G.655 Optical Fibers.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2008, vol. 24(12). 2674 - 2680
    [viewed 12 April 2021]. Available from: https://publications.waset.org/pdf/7342.