Cohomologies of countable unions of closed sets with applications to Cantor manifolds. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 87, p. 249–255, 1995. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/418. Acesso em: 15 dec. 2025.