1. Abd Elzaher, M. F., Shalaby, M., & El Ramly, S. H. (2016). Securing modern voice communication systems using multilevel chaotic approach. International Journal of Computer Applications, 135(9), 0975–8887.
2. Ashtiyani, M., Moradi Birgani, P., & Karimi Madahi, S. S. (2012). Speech signal encryption using chaotic symmetric cryptography. Journal of Basic and Applied Scientific Research, 2(2), 1668–1674.
3. Belmeguenai, A., Mansouri, K., & Lashab, M. (2015). Speech encryption using stream cipher. British Journal of Applied Science and Technology, 8(1), 107–125.
4. Belmeguenai, A., Berrak, O. & Mansouri, K. (2015). Selective encryption of medical images, In Proceedings of the 10th International Conference on Computer Vision Theory and Applications (VISAPP-2015), pp. 93-99, ISBN: 978-989-758-091-8, Berlin.
5. Belmeguenai, A., Mansouri, K., & Medoued, A. (2015). Speech encryption using the nonlinear filter generator, 16th international Conference on Sciences and Techniques of Automatic control and computer engineering STA'2015, pp. 58–62, IEEE conference (STA conference is indexed scopus), Tunisia.