Kismiantini, Kismiantini, Fajra Husniyah, and Osval Antonio Montesinos-López. 2021. “Drought-Prone Areas Mapping Using Fuzzy C-Means Method in Gunungkidul District”. PYTHAGORAS Jurnal Matematika Dan Pendidikan Matematika 16 (2):217-32. https://doi.org/10.21831/pythagoras.v16i2.43780.