Machine learning information fusion in Earth observation: A comprehensive review of methods, applications and data sources. - Salcedo-Sanz, Sancho; Ghamisi, Pedram; Piles, María; Werner, Martin; Cuadra, Lucas; Moreno-Martínez, Álvaro; Izquierdo-Verdiguier, Emma; Muñoz-Marí, Jordi; Mosavi, Amirhosein; Camps-Valls, Gustau (Inf. Fusion, 2020)