MAHUYA SASMAL, PALASH RAY, MRINMOY SEN,RAJESH MUKHERJEE, SHAON BANDYOPADHYAY. A Brief Review on Text and Image CAPTCHA. Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 11, n. 1, p. 508–526, 2022. DOI: 10.17762/turcomat.v11i1.11876. Disponível em: https://turcomat.org/index.php/turkbilmat/article/view/11876. Acesso em: 27 apr. 2024.