GOYAL, Nitakshi; NOORIE, Navpreet Singh. θ-CLOSURE AND T\(_{{2}\frac{1}{2}}\) SPACES VIA IDEALS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 41, p. 571–583, 2019. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7088. Acesso em: 17 oct. 2026.