Unmanned Aerial Vehicles for Air Pollution Monitoring: A Survey. - Naser Hossein Motlagh; Pranvera Kortoçi; Xiang Su; Lauri Lovén; Hans Kristian Hoel; Sindre Bjerkestrand Haugsvær; Varun Srivastava; Casper Fabian Gulbrandsen; Petteri Nurmi; Sasu Tarkoma (IEEE Internet Things J., 2023)