AIDOS, E. Z.; KAZTAY, M. About the relation between the best approximations in mixed norms. Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 84, n. 1, p. 3–7, 2018. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/418. Acesso em: 22 dec. 2024.