RAWSHDEH, Amani; ALHIHI, Suad. Urysohn lemma in semi-linear uniform spaces. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 42, p. 744–755, 2019. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7193. Acesso em: 27 oct. 2026.