Schmitz, Roland, Li, Shujun, Grecos, Christos and Zhang, Xinpeng (2015) Content-Fragile Commutative Watermarking-Encryption Based on Pixel Entropy. In: Advanced Concepts for Intelligent Vision Systems. ACIVS 2015. Lecture Notes in Computer Science (9386). Springer, Cham, pp. 474-485. ISBN 9783319259031
Schmitz, Roland, Li, Shujun, Grecos, Christos and Zhang, Xinpeng (2013) Towards More Robust Commutative Watermarking-Encryption of Images. In: 2013 IEEE International Symposium on Multimedia. IEEE, pp. 283-286. ISBN 9781479921713
Schmitz, Roland, Li, Shujun, Grecos, Christos and Zhang, Xinpeng (2012) A New Approach to Commutative Watermarking-Encryption. In: Communications and Multimedia Security. CMS 2012. Lecture Notes in Computer Science (7394). Springer Berlin Heidelberg, pp. 117-130. ISBN 9783642328053