GONZÁLEZ, M.; MARTÍNEZ-ABEJÓN, A.; SALAS-BROWN, M. Perturbation classes for semi-Fredholm operators on subprojective and superprojective spaces. Annales Fennici Mathematici, [S. l.], v. 36, n. 2, p. 481–491, 2011. DOI: 10.5186/aasfm.2011.3625. Disponível em: https://afm.journal.fi/article/view/135361. Acesso em: 25 nov. 2024.