Sari, Putri Tunjung, Indarto Indarto, Marga Mandala, and Bowo Eko Cahyono. “Mapping of Soil Quality Index (SQI) for Paddy Fields Using Sentinel-2 Imagery, Laboratory Analysis, and Principal Component Analysis”. Geosfera Indonesia 6, no. 2 (August 17, 2021): 173–188. Accessed April 18, 2025. https://geosfera.jurnal.unej.ac.id/index.php/GEOSI/article/view/24506.