ANNON MOUSA, E. . A Study on Optimal Approximation of Functional Subsets within Real Normed Spaces. Pure Sciences International Journal of Kerbala, [S. l.], v. 1, n. 4, p. 78–83, 2024. Disponível em: https://journals.uokerbala.edu.iq/index.php/psijk/article/view/2373. Acesso em: 10 jan. 2025.