1. 1. M. Chen, N. Memon, E.K. Wong, Data hiding in document images, in: H. Nemati (Ed.). Premier Reference Source–Information Security and Ethics: Concepts, Methodologies, Tools and Applications, New York: Information Science Reference, 2008, pp. 438-450
   2. D.C. Lou, J.L. Liu, H.K. Tso, Evolution of information –hiding technology, in H. Nemati (Ed.), Premier Reference Source–Information Security and Ethics: Concepts, Methodologies, Tools and Applications, New York: Information Science Reference, 2008, pp. 438-450
   3. Schneider, Secrets & Lies, Indiana:Wiley Publishing,2000.
   4. E. Cole, Hiding in Plain Sight: Steganography and the Art of Covert Communication, Indianapolis: Wiley Publishing, 2003.
   5. T. Jahnke, J. Seitz, (2008). An introduction in digital watermarking applications, principles and problems, in: H.Nemati (Ed), Premier Reference Source–Information Security and Ethics: Concepts, Methodologies, Tools and Applications, New York: Information Science Reference,2008, pp. 554-569.
   6. M. Warkentin, M.B. Schmidt, E. Bekkering, Steganography and steganalysis, Premier reference Source–Intellectual Property Protection for Multimedia Information technology, Chapter XIX, 2008, pp. 374-380.
   7. N.N. El-Emam, Hiding a large amount of data with high security using steganography algorithm, Journal of Computer Science 3 (2007) 223-232
   8. P.Y. Chen, W.E. Wu, A modifed side match scheme for image steganography, International Journal of Applied Science & Engineering 7 (2009) 53-60
   9. C.C. Chang, H.W. Tseng, A steganographic method for digital image using side match, Pattern Recognition Letters 25 (2004) 1431-1437
   10. P.C. Wu, W.H. Tsai, A steganographic method for images by pixel-value differencing, Pattern Recognition Letters 24 (2003) 1613-1626
   11. R. Ibrahim and T.S. Kuan, Steganography imaging system (SIS): hiding secret message inside an image, Lecture Notes in Engineering and Computer Science: Proceedings of The World Congress on Engineering and Computer Science 2010, San Francisco, USA, 2010, pp. 144-148.