KOVTONYUK, D. A.; RYAZANOV, V. I. On the Theory of Prime Ends for Space Mappings. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 4, p. 467–479, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1997. Acesso em: 5 dec. 2025.