DAWOOD, Narjis A.; GASIM, Suaad G. On Contractible J-Saces. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 2017, n. IHSCICONF, p. 330–336, 2018. DOI: 10.30526/2017.IHSCICONF.1867. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1867.. Acesso em: 14 aug. 2024.