Paembonan, Andri Yadi, and Fedy Darma Wijaya Waruwu. “Subsurface Utility Identification at ITERA Campus Using Multi-Frequency Ground Penetrating Radar”. Jurnal Teori dan Aplikasi Fisika 12, no. 1 (January 29, 2024): 93–102. Accessed November 29, 2025. https://jtaf.fmipa.unila.ac.id/index.php/jtaf/article/view/349.