ABU-SALEEM, M. Homology group on manifolds and their foldings. Tamkang Journal of Mathematics, [S. l.], v. 41, n. 1, p. 31–38, 2010. DOI: 10.5556/j.tkjm.41.2010.636. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/636. Acesso em: 1 may. 2024.