Rizal, Jose, 		Nugroho, Sigit, 		Irwanto, Adi, AND 		Debora, ,.
" Analisis Kejadian Gempa Bumi Tektonik  di Wilayah Pulau Sumatera" <em>Jurnal Matematika</em> [Online], Volume 6 Number 1 (30 June 2016)