A Study of Contact Tracing Applications for Containing the Spread of Covid-19- A Global Perspective. International Journal of Innovative Research in Computer Science & Technology, [S. l.], v. 10, n. 4, p. 139–141, 2022. DOI: 10.55524/. Disponível em: https://acspublisher.com/journals/index.php/ijircst/article/view/10396.. Acesso em: 23 jul. 2024.