PACULABA, A. M.; S. BATHAN, M. A.; NIEGO, E. L. Log Monitoring System using Quick Response (QR) Code: A State University’s COVID – 19 Contact Tracing System. International Journal of Informatics, Information System and Computer Engineering (INJIISCOM), v. 3, n. 2, p. 209-218, 18 out. 2022.