1. Bao P, Ma X (2005) Image adaptive watermarking using wavelet domain singular value decomposition. IEEE Trans Circuits Syst Video Technol 15(1):96–102
2. Chang C-Y, Shen W-C, Wang H-J (2006) Using counter-propagation neural network for robust digital audio watermarking in DWT domain. In: IEEE International conference on systems, man and cybernetics, (SMC’06), vol 2, pp 1214–1219
3. Chen B, Wornell GW (2001) Quantization index modulation: a class of provably good methods for digital watermarking and information embedding. IEEE Trans Inf Theory 47(4):1423–1443
4. Christian N, Jurgen H (1998) Digital watermarking and its influence on audio quality. In: Proceeding of the 105th AES convention, Preprint 4823
5. Cox I, Miller M, Bloom J, Fridrich J, Kalke T (2007) Digital watermarking and steganography. Morgan Kaufmann, USA