Atif Elahi and  Ijaz Mansoor Qureshi and  Mehreen Atif and  Noor Gul,  Sidelobe Reduction in Cognitive Radio Systems Using Hybrid Technique.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 123(3). 235 - 238
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10006455.