Guorong Xuan Yun Q. Shi Peiqi Chai Jianzhong Teng Zhicheng Ni Xuefeng Tong Optimum Histogram Pair Based Image Lossless Data Embedding. 84-102 2009 4 T. Data Hiding and Multimedia Security http://dx.doi.org/10.1007/978-3-642-01757-5_5 journals/tdhms/2009-4 db/journals/tdhms/tdhms4.html#XuanSCTNT09