Say Wei Foo and  Qi Dong,  Audio Watermarking Based on Compression-expansion Technique.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2010, vol. 37(1). 55 - 61
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10916.