Sianturi, Libianko, and Sindak Hutahuruk. “KAJIAN OPTIMASI JARINGAN GSM DI GEDUNG UTAMA UNIVERSITAS HKBP NOMMENSEN MEDAN”. Jurnal Visi Eksakta 1, no. 1 (July 30, 2020): 43-62. Accessed April 28, 2024. https://ejournal.uhn.ac.id/index.php/eksakta/article/view/50.