Adonia, Ndagijimana, et al. “Evaluation of a Model to Enhance Resource Allocated to Device-to-Device Communication in CDMA Based Cellular Systems - Resource Capacity Analysis”. International Journal of Scientific Research in Network Security and Communication, vol. 4, no. 4, Sept. 2016, pp. 1-7, https://ijsrnsc.org/index.php/j/article/view/44.