“Estimating the relative contribution of streetlights, vehicles, and residential lighting to the urban night sky brightness”
Salvador Bará, Ángel Rodríguez-Arós, Marcos Pérez, Borja Tosar, Raul C. Lima, Alejandro Sánchez de Miguel & Jaime Zamorano Lighting Research and Technology; 51:1092–1107 (2019). Published online before printing (2018)