Seung-Jun Yu and  Young-Min Ko and  Hyoung-Kyu Song,  An Improved Transmission Scheme in Cooperative Communication System.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 110(2). 263 - 266
    [viewed 25 May 2020]. Available from: https://publications.waset.org/pdf/10003464.