DHANDHAYUTHAPANI, Olivia. How to Solve Unbreakable Codes: World War II Edition; Version 202.3. International Journal of Research in Engineering, Science and Management, [S. l.], v. 6, n. 6, p. 159–161, 2023. Disponível em: https://journal.ijresm.com/index.php/ijresm/article/view/2749.. Acesso em: 16 may. 2024.