Bukhari, S., A. Yousaf, S. Niazi, and M. R. Anjum. “A Novel Technique for the Generation and Application of Substitution Boxes (s-Box) for the Image Encryption”. The Nucleus, vol. 55, no. 4, Apr. 2019, pp. 219-25, http://202.83.167.189/index.php/Nucleus/article/view/229.