N. Patel, Krunalkumar, Saurabh A. Shah, and Dipti B. Shah. 2018. “Robust and Secured Digital Audio Watermarking Using Improved DWT-SVD-DFT Approach”. International Journal of Engineering & Technology 7 (3.12): 1112-17. https://doi.org/10.14419/ijet.v7i3.12.17771.