Efficient three-dimensional deployment of multiple unmanned aerial vehicles supporting ground base station toward maximizing served users with heterogeneous quality-of-service requirements. - Khaled Farouq Hayajneh; Ferdos Abualkishik; Khaled Bani-Hani; Hazim Shakhatreh; Zaid Albataineh (Trans. Emerg. Telecommun. Technol., 2023)