KARLOVA, O. Functions with connected graphs and $B_1$-retracts. Carpathian Mathematical Publications, [S. l.], v. 6, n. 2, p. 256–259, 2014. DOI: 10.15330/cmp.6.2.256-259. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1357. Acesso em: 21 nov. 2024.