VOLOSHYN, H.A.; MASLYUCHENKO, V.K. On approximation of the separately continuous functions $2\pi$-periodical in relation to the second variable. Carpathian Mathematical Publications, [S. l.], v. 2, n. 1, p. 4–14, 2010. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/3975. Acesso em: 25 jun. 2024.