Canigia, B., Yanuar, F. and Devianto, D. (2014) “ANALISIS ATRIBUT-ATRIBUT DAN POSISI OPERATOR GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS) BERDASARKAN PREFERENSI PELANGGAN”, Jurnal Matematika UNAND, 3(4), pp. 78–85. doi: 10.25077/jmu.3.4.78-85.2014.