N. John, Michael, Ogoegbulem Ozioma, Udoaka Otobong. G., Boniface O. Nwala, and Obi Perpetua Ngozi. “CRYPTOGRAPHIC ENCRYPTION BASED ON RAIL-FENCE PERMUTATION CIPHER”. GPH - International Journal of Mathematics 6, no. 11 (November 26, 2023): 01-06. Accessed July 22, 2024. https://gphjournal.org/index.php/m/article/view/1139.