HERASYMCHUK, V. H.; MASLYUCHENKO, V. K.; MASLYUCHENKO, O. V. Separately continuous functions with respect to a variable frame. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 56, n. 9, p. 1281–1286, 2004. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3841. Acesso em: 5 dec. 2025.