Rohmah, Dewi Syifaur, and Dewi Retno Sari Saputro. 2020. “Clustering Data Dengan Algoritme Fuzzy C-Means Berbasis Indeks Validitas Partition Coefficient and Exponential Separation (PCAES)”. PRISMA, Prosiding Seminar Nasional Matematika 3 (February), 58-63. https://journal.unnes.ac.id/sju/prisma/article/view/37649.