Talib Hussein, Refat, and Awatf A. Jafar. “Novel Security Image Steganography Based on DWT and Pseudorandom Sequences”. Journal of Engineering and Sustainable Development, vol. 14, no. 1, Apr. 2010, pp. 134-48, https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1487.