R. ZAGHAR, Dhafer. A New Family of Chain Function. Journal of Engineering and Sustainable Development, Baghdad, Iraq, v. 17, n. 5, p. 55–68, 2013. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1055.. Acesso em: 9 may. 2025.