Yun Cao Xianfeng Zhao Dengguo Feng Rennong Sheng Video Steganography with Perturbed Motion Estimation. 193-207 2011 Information Hiding http://dx.doi.org/10.1007/978-3-642-24178-9_14 conf/ih/2011 db/conf/ih/ih2011.html#CaoZFS11