Comparison of NDVI, NDRE, MSAVI and NDSI Indices for Early Diagnosis of Crop Problems. Agricultural Engineering , [S. l.], v. 27, p. 47–57, 2023. DOI: 10.2478/agriceng-2023-0004. Disponível em: https://ojs.agriceng.org/index.php/AgricEng/article/view/334.. Acesso em: 8 jan. 2025.