MAY-CUSTODIO, Victor Gustavo; RAMÍREZ-PÁRAMO, Alejandro. Relativized Urysohn Spaces. Topology Proceedings, [S. l.], v. 58, p. 265–277, 2021. Disponível em: https://www.topologyproceedings.org/index.php/tp/article/view/115. Acesso em: 30 jun. 2026.