1. A tutorial on UAVs for wireless networks: applications, challenges, and open problems;Mozaffari;IEEE Commun. Surv. Tutor.,2019
2. Survey of important issues in UAV communication networks;Lav;IEEE Commun. Surv. Tutor.,2015
3. UMTS Radio Network Planning, Optimization and QoS Management;Jukka,2003
4. Feng Qixing, McGeehan Joe, Tameh Eustace K., Nix Andrew R., Path loss models for air-to-ground radio channels in urban environments, in: Vehicular Technology Conference, Melbourne, 2006.
5. Al-Hourani Akram, Sithamparanathan Kandeepan, Abbas Jamalipour, Modeling air-to-ground path loss for low altitude platforms in urban environments, in: IEEE Global Communications Conference, Austin, TX, USA, 2014.