linear equivalence determination of key-stream sequence using Z-Transform. Baghdad Science Journal, Iraq, Baghdad, v. 3, n. 1, p. 111–116, 2025. DOI: 10.21123/bsj.2006.683. Disponível em: https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/683.. Acesso em: 19 jun. 2025.