Saidah, H.; Budianto, M. B.; Yasa, I. W. .; Hidayat, S. .; Jaya Negara, I. D. G.; Sulistiyono, H. . Assessment of Duration and Frequency of Drought by Percent Normal Precipitation Index (PNPI) for Lombok Island . JoSSEd 2022, 3, 22-29.