Hồng, Bùi Thế. “A Revision for Secure and Invisible Data Hiding in 2-Color Images”. <i>Journal of Computer Science and Cybernetics</i> 21, no. 4 (July 24, 2012): 281–292. Accessed December 6, 2025. https://vjs.ac.vn/jcc/article/view/1432.