Essentially Second Modules. Iraqi Journal of Science, [S. l.], v. 60, n. 6, p. 1374–1380, 2019. DOI: 10.24996/ijs.2019.60.6.21. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/772.. Acesso em: 11 apr. 2025.