M. Duc, Duong, and Duong A. Duc. “A GEOMETRICAL ROBUST IMAGE DATA HIDING SCHEME BASED ON CONTOURLET TRANSFORM”. <i>Vietnam Journal of Science and Technology</i> 48, no. 4 (June 26, 2012). Accessed January 11, 2026. https://vjs.ac.vn/jst/article/view/1173.