Characterization of portuguese sown rainfed grasslands using remote sensing and machine learning - Morais, Tiago; Jongen, Marjan; Tufik, Camila; Rodrigues, Nuno; Gama, Ivo; Fangueiro, David; Serrano, João; Vieira, Susana; Domingos, Tiago; Teixeira, Ricardo (2022)