FI-Extending Semimodule and Singularity. Iraqi Journal of Science, [S. l.], v. 63, n. 3, p. 1277–1284, 2022. DOI: 10.24996/ijs.2022.63.3.32. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/4790.. Acesso em: 22 jul. 2024.