Bhowmick, Anirban, and M Geetha. “Enhancing Resistance of Hill Cipher Using Columnar and Myszkowski Transposition”. International Journal of Computer Sciences and Engineering 3, no. 2 (February 28, 2015): 20–25. Accessed February 2, 2026. https://ijcse.isroset.org/index.php/j/article/view/390.