BUSHEV, D.M.; ABDULLAYEV, F.G.; KAL’CHUK, I.V.; IMASHKYZY, M. The use of the isometry of function spaces with different numbers of variables in the theory of approximation of functions. Carpathian Mathematical Publications, [S. l.], v. 13, n. 3, p. 805–817, 2021. DOI: 10.15330/cmp.13.3.805-817. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/5194. Acesso em: 19 apr. 2024.