KHASKHELI, G. M.; SHERBAZ, M. .; SHAIKH, U. R. . A comparative usability study of single-factor and two-factor authentication. Tropical Scientific Journal, [S. l.], v. 1, n. 1, p. 17–27, 2022. Disponível em: https://www.scientificacademic.com/index.php/tsj/article/view/3. Acesso em: 15 may. 2025.