Islam, S. M. Shahidul, and A. A. K. Majumdar. “A Note on the Tower of Hanoi Problem With Evildoers”. Engineering International 9, no. 1 (April 1, 2021): 21–28. Accessed July 6, 2025. https://www.abc.us.org/ojs/index.php/ei/article/view/515.