CHOUDHARY, Niket; DESHMUKH, Sudarshan. Automatic crack of Yahoo CAPTCHA. International Journal of Computer Sciences and Engineering, [S. l.], v. 3, n. 5, p. 192–195, 2015. Disponível em: https://ijcse.isroset.org/index.php/j/article/view/522. Acesso em: 2 feb. 2026.