Kasim, Sandra, Joni Loe Talo, Rustan Efendi, and Maskur Maskur. “Penentuan Lapisan Bawah Permukaan Menggunakan Metode Refraksi Mikrotremor Di Kampus Universitas Tadulako”. Gravitasi 15, no. 1 (February 24, 2017). Accessed August 26, 2025. https://bestjournal.untad.ac.id/index.php/GravitasiFisika/article/view/7888.