A Potential Game Approach to Multiple UAVs 3D Placement in Iot Communication Networks - Wu, Binbin; Zhang, Bangning; Zhao, Bing; Guo, Daoxing; Ma, Xiaobo; Wei, Guofeng (2020 International Conference on Wireless Communications and Signal Processing (WCSP), Wireless Communications and Signal Processing (WCSP), 2020 International Conference on, 2020)