Authenticating a webpage using CAPTCHA image. International Journal of Advanced Research in Computer Science, [S. l.], v. 5, n. 7, p. 133–135, 2017. DOI: 10.26483/ijarcs.v5i7.2276. Disponível em: https://www.ijarcs.info/index.php/Ijarcs/article/view/2276. Acesso em: 22 feb. 2026.