Fitriyah Lubis, Ainul, and Basari Basari. “Development of Proximity-Based COVID-19 Contact Tracing System Devices for Locally Virus Spread Prevention”. Jurnal Ilmiah Teknik Elektro Komputer dan Informatika 8, no. 1 (May 16, 2022): 144–156. Accessed November 23, 2024. https://journal.uad.ac.id/index.php/JITEKI/article/view/23697.