Khalil Ibrahim S, سندس, Mohammad Hisham Yousif W, ورقاء. hiding data in a text using color variance. EDUSJ [Internet]. 2013 Aug. 1 [cited 2025 Aug. 4];26(3):194-215. Available from: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17434