Closed (St-Closed) Compressible Modules and Closed (St-Closed) Retractable Modules. Iraqi Journal of Science, [S. l.], v. 65, n. 4, p. 2141–2149, 2024. DOI: 10.24996/ijs.2024.65.4.31. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9011.. Acesso em: 7 apr. 2025.