Khan, Imran Moez. “EVALUATING A SEGMENTATION-RESISTANT CAPTCHA INSPIRED BY THE HUMAN VISUAL SYSTEM MODEL”. IIUM Engineering Journal 12, no. 2 (October 18, 2011): 145–154. Accessed May 2, 2024. https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/127.