Hazim Alkawaz, Mohammed, Tuerxun Waili, and Nur Aqila Iwana Imran. 2020. “Digital Watermark Copyright Protection With QR Code”. International Journal on Perceptive and Cognitive Computing 6 (1):19-23. https://journals.iium.edu.my/kict/index.php/IJPCC/article/view/141.