M. K. GHOSH. \(\beta_\lambda\)-closed spaces. Malaya Journal of Matematik, India, v. 8, n. 03, p. 822–826, 2020. DOI: 10.26637/MJM0803/0015. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1508. Acesso em: 16 jul. 2024.