KLASTERING WILAYAH DI JAWA TIMUR BERDASARKAN FAKTOR UNMET NEED MENGGUNAKAN FUZZY GUSTAFSON-KESSEL. j.sist.inf.inform. [Internet]. 2025 Aug. 8 [cited 2025 Sep. 30];8(2):270-81. Available from: https://ejournal.lppm-unbaja.ac.id/index.php/jsii/article/view/3976