HULU, F. N.; YADI, I.; ZUMHARI, Z.; NOVALIANDA, S. A MANAGEMENT QUALITY SIGNAL DETECTION USING OPEN SIGNAL APPLICATION AT SEVERAL POINT LOCATIONS IN MEDAN CITY. Jurnal Ekonomi, [S. l.], v. 11, n. 03, p. 1087–1090, 2022. Disponível em: https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/836. Acesso em: 9 may. 2026.