ABHISHEK CHAUDHARY; PRATHAMESH DEOGHARKAR; SAPNA DHANRAJ; A. R. SONULE. DYNAMIC CAPTCHA. International Engineering Journal For Research & Development, [S. l.], v. 5, n. 5, p. 6, 2020. DOI: 10.17605/OSF.IO/2GHZW. Disponível em: https://www.iejrd.com/index.php/iejrd/article/view/774. Acesso em: 11 may. 2026.