Effects of the COVID-19 Lockdown on Urban Light Emissions: Ground and Satellite Comparison. - Máximo Bustamante-Calabria; Alejandro Sánchez de Miguel; Susana Martín-Ruiz; Jose-Luis Ortiz; José M. Vílchez; Alicia Pelegrina; Antonio García; Jaime Zamorano; Jonathan Bennie; Kevin J. Gaston (Remote. Sens., 2021)