Utama, A., Hadi, M. P., & Nurjani, E. (2021). Geographic Information Systems Application to Drought Distribution Identification with Standardized Precipitation Index (SPI) Method in Trenggalek Regency. INTENSIF: Jurnal Ilmiah Penelitian Dan Penerapan Teknologi Sistem Informasi, 5(2), 266–278. https://doi.org/10.29407/intensif.v5i2.15645