GAJULA SAI LAKSHMI; B.S.MURTHY. Captcha Recognition Using CNN. INTERNATIONAL JOURNAL OF MANAGEMENT RESEARCH AND REVIEW, India, v. 15, n. 2s, p. 25–28, 2025. Disponível em: https://ijmrr.com/index.php/ijmrr/article/view/25. Acesso em: 8 aug. 2026.