Delta-convergence and sequential delta-compactness on Banach spheres. Letters in Nonlinear Analysis and its Applications, [S. l.], v. 3, n. 2, p. 85–102, 2025. Disponível em: https://lettersinnonlinearanalysis.com/index.php/lnaa/article/view/v3n2a1. Acesso em: 24 may. 2026.