Hilal A. Fadhil and  Syed A. Aljunid and  R. Badlishah Ahmed,  Performance of Random Diagonal Codes for Spectral Amplitude Coding Optical CDMA Systems.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2008, vol. 23(11). 2455 - 2458
    [viewed 28 January 2020]. Available from: https://publications.waset.org/pdf/519.