Yu Zhang and Ye Tian and Fang Ye Yixuan Kang, Game-Theory-Based on Downlink Spectrum Allocation in Two-Tier Networks. journal = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2019, vol. 150(6). 417 - 420 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/10010469.