W. F. Winda Fariza, Syafriandi Syafriandi, Fadhira Vitasya Putri, and Eujeniatul Jannah, “Fuzzy C-Means Based Clustering of Central Java’s Regencies and Cities Using Economic Welfare Indicators 2023”, ujsds, vol. 3, no. 4, pp. 413–421, Nov. 2025.