Abubakar, A., Zeki, A. M., Chiroma, H., Abdullahi Muaz, S., Sari, E. N., & Herawan, T. (2015). Spread spectrum audio watermarking using vector space projections. Springer International Publishing.

Abubakar, Adamu, Akram M. Zeki, Haruna Chiroma, Sanah Abdullahi Muaz, Eka Novita Sari, and Tutut Herawan. Spread Spectrum Audio Watermarking Using Vector Space Projections. Springer International Publishing, 2015.

Abubakar, Adamu, et al. Spread Spectrum Audio Watermarking Using Vector Space Projections. Springer International Publishing, 2015.