AHMED, A. Semi-perfect Sets in Topological Spaces. مجلة العلوم الإنسانية والتطبيقية, [S. l.], v. 6, n. 11, p. 298–302, 2023. DOI: 10.65137/jhas.v6i11.415. Disponível em: https://khsj.elmergib.edu.ly/index.php/jhas/article/view/415. Acesso em: 5 2025.