Global, diffuse and direct solar radiation at the surface in the city of Rio de Janeiro: Observational characterization and empirical modeling - Marques Filho, Edson Pereira; Oliveira, Amauri Pereira de; Vita, Willian A; Mesquita, Francisco L. L; Codato, Georgia; Escobedo, João F; Cassol, Mariana; França, José Ricard de A (Renewable Energy, 2016)