KHAMMAS HUSSEIN, Abbas. Predication of A Mathematical Model for A Hardness in Steel-52100. Journal of Engineering and Sustainable Development, Baghdad, Iraq, v. 18, n. 5, p. 134–148, 2014. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/954.. Acesso em: 22 apr. 2025.