R. Rama Kishore and Sunesh, Optimized and Secured Digital Watermarking Using Entropy, Chaotic Grid Map and Its Performance Analysis . journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2018, vol. 138(6). 451 - 458 [viewed 18 September 2024]. Available from: https://publications.waset.org/pdf/10009102.