A. Ibrahim, Fatma, and Mabroukah A. Amarif. “The Mechanism of Secure Watermarking Based on Encryption and Attached Frame With Image”. Journal of Pure & Applied Sciences 18, no. 4 (November 17, 2019): 51–54. Accessed November 6, 2026. https://www.sebhau.edu.ly/journal/jopas/article/view/386.