1. Cao, H.Q., Xiang, H., Li, X.T., Liu, M., Yi, S., Wei, F., 2006. A Zero-Watermarking Algorithm Based on DWT and Chaotic Modulation. Proc. SPIE, 6247:624716-1–624716-9. [doi:10.1117/12.663927]
2. Ding, X.Y., 2006. Study on the Digital Audio Watermarking Scheme Based on Blind Source Separation. MS Thesis, School of Electronic and Information Engineering, Dalian University of Technology, p.26–35 (in Chinese).
3. Gersho, A., Gray, R.M., 1992. Vector Quantization and Signal Compression. Kluwer Academic Publishers, Boston.
4. Hyvarinen, A., 1999. Fast and robust fixed-point algorithms for independent component analysis. IEEE Trans. on Neural Networks, 10(3):626–634. [doi:10.1109/72.761722]
5. Ji, Z., Xiao, W.W., Wang, J.H., Zhang, J.H., 2003. A multiple watermarking algorithm for digital image based on chaotic sequences. Chin. J. Computers, 26(11):1555–1561 (in Chinese).