SAPUTRA, D. D.; TANAAMAH, A. R. Optimizing the Use of QR Codes in Web-Based Attendance Information Systems During the Covid-19 Pandemic (Case Study: KONI Salatiga City). Jurnal Mantik, [S. l.], v. 5, n. 2, p. 1076-1086, 2021. DOI: 10.35335/jurnalmantik.Vol5.2021.1461.pp1076-1086. Disponível em: https://www.ejournal.iocscience.org/index.php/mantik/article/view/1461. Acesso em: 26 oct. 2026.