Enhancing Soil Organic Carbon Mapping by Combining Remote Sensing and Farmer-Collected Data in a Machine Learning Framework. - Athanasios Askitopoulos; Dimitrios Bormpoudakis; Iason Tsardanidis; Ilias Tsoumas; Dimitra A. Loka; Christos Noulas; Paraskevi Gripari; Alexandros Tsitouras; Charalampos Kontoes (IEEE Big Data, 2025)