MNIF, M.; OULED-HMED, A.-A. The Local spectral theory and surjective spectrum of linear relations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 2, p. 222–237, 2021. DOI: 10.37863/umzh.v73i2.81. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/81. Acesso em: 27 apr. 2025.