1Dr. G. Prasuna, 2Devarapalli Sara, 3Burla Srilekha, 4Eadara Helina. “Develop A Ml Model Based Solution to Refine Captcha”. American Journal of AI Cyber Computing Management, vol. 6, no. 3, Sept. 2026, pp. 739-45, https://doi.org/10.64751/.