Tarigan, Eva Cristyani Br, Rohmah Artika, Muhamad Rizky Febriawan, Kholida Nailil Muna, and Sherly Herawati Hestina Putri. “Covid-19 Risk Mapping With the Fuzzy C-Means Method in DIY Province”. Proceeding International Conference on Science and Engineering 4 (February 28, 2021): 259–265. Accessed June 17, 2026. http://sunankalijaga.org/prosiding/index.php/icse/article/view/668.