Affandy NA, Iranata D, Anwar N, et al. Assessment of Agricultural Drought Using the Normalized Difference Drought Index (NDDI) to Prediction Drought at Corong River Basin. IJIE. 2024;16(1):378-393. Accessed April 9, 2026. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/14407