ABRISHASMI-MOGHADDAM, M.; SISTANI, T. BEST APPROXIMATION FOR CONVEX SUBSETS OF 2-INNER PRODUCT SPACES. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO), [S. l.], v. 3, n. 2, p. 269–278, 2012. Disponível em: https://ph03.tci-thaijo.org/index.php/jnao/article/view/2677. Acesso em: 2 sep. 2026.