N. Ramalingeswara Swamy, Saiful Islam, Phalguni Gupta. Two level reversible data hiding in 2D images. In Yookun Cho, Sung Y. Shin, Sang-Wook Kim, Chih-Cheng Hung, Jiman Hong, editors, Symposium on Applied Computing, SAC 2014, Gyeongju, Republic of Korea - March 24 - 28, 2014. pages 58-59, ACM, 2014. [doi]
Abstract is missing.