BIADRYTSKI, Aliaksandr S. On some properties of one Očan type topology. Journal of the Belarusian State University. Mathematics and Informatics, [S. l.], n. 3, p. 31–39, 2024. Disponível em: https://journals.bsu.by/index.php/mathematics/article/view/6302. Acesso em: 17 jul. 2026.