AL-ZAMEL, A.; KHALIL, R. ALTERNATION THEOREM FOR $C(I,X)$ AND APPLICATION TO BEST LOCAL APPROXIMATION. Tamkang Journal of Mathematics, [S. l.], v. 24, n. 2, p. 135–147, 1993. DOI: 10.5556/j.tkjm.24.1993.4483. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4483. Acesso em: 7 may. 2024.