WASET
    Hao He and  Shaoqian Li,  Distributed Relay Selection and Channel Choice in Cognitive Radio Network.   journal   = {International Journal of Information and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2010, vol. 37(1). 152 - 156
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/6010.