MS. MERIN MANOJ; JEEVAN T RAJU; ANSIYA ABDUL SALAM; JOMON JOSE. EVOLUTION OF CAPTCHAs: DEEP-CAPTCHA. National Conference on Emerging Computer Applications, [S. l.], v. 1, n. 1, 2019. Disponível em: https://ajcejournal.in/nceca/article/view/9. Acesso em: 29 sep. 2025.