Waleed, Jumana, Sarah Saadoon Jasim, and Thekra Abbas. “The Inclusion of Watermarks Based on QR Code Analysis”. International Journal of Engineering & Technology 7, no. 2.9 (June 1, 2018): 97–101. Accessed May 24, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/12438.