Vikas K. Kolekar and Milindkumar B. Vaidya, “SHUFFLED INPUT GRAPHICAL PASSWORD AUTHENTICATION SCHEMES BUILT ON CAPTCHA TECHNOLOGY ”, Int. j. innov. eng. res. technol., pp. 1–4, Mar. 2021, Accessed: Jan. 31, 2025. [Online]. Available: https://repo.ijiert.org/index.php/ijiert/article/view/618