PAYMAN M. MAHMOOD. On Contra b-I- Continuous and Contra b-I- open Functions. Tikrit Journal of Pure Science, [S. l.], v. 20, n. 2, p. 177–186, 2023. DOI: 10.25130/tjps.v20i2.1178. Disponível em: https://tjps.tu.edu.iq/index.php/tjps/article/view/1178. Acesso em: 19 may. 2024.