1. R.M. Davis, The data encryption standard in perspective, in: Computer Security and the Data Encryption Standard, National Bureau of Standards Special Publication, February 1978.
2. The Design of Rijndael: AES – The Advanced Encryption Standard;Daemen,2002
3. Hiding secret data in images via predictivecoding;Yu;Pattern Recognition,2005
4. Information Hiding Techniques for Steganography and Digital Watermarking;Katzenbeisser,2000
5. Exploring steganography: seeing the unseen;Johnson;IEEE Computer,1998