NASHINE, H. K. A Remark on Vetrivel’s Existence Theorem on Ky Fan’s Best Approximant. Sarajevo Journal of Mathematics, [S. l.], v. 2, n. 1, p. 49–54, 2024. DOI: 10.5644/SJM.02.1.05. Disponível em: https://sjm.anubih.ba/index.php/sjm/article/view/427. Acesso em: 15 oct. 2024.