AUAD, A. A.; HILAL, M. A.; HUSSEIN, A. A. η- approximation, η-co- approximation and δ- orthogonal in bounded space. Results in Nonlinear Analysis, [S. l.], v. 6, n. 4, p. 149–156, 2023. Disponível em: https://nonlinear-analysis.com/index.php/pub/article/view/257. Acesso em: 24 nov. 2024.