ชาติรังสรรค์ ม.; ตั้งมณี ช. Effects of Typefaces, Rotations and Sets of Characters of text-based CAPTCHA on Human Affirmative Rates. JOURNAL OF INFORMATION SCIENCE AND TECHNOLOGY, [S. l.], v. 4, n. 2, p. 16–23, 2013. DOI: 10.14456/jist.2013.9. Disponível em: https://ph02.tci-thaijo.org/index.php/JIST/article/view/135363. Acesso em: 28 may. 2024.