Essential g-Ascent and g-Descent of a Closed Linear Relation in Hilbert Spaces. Extracta Mathematicae, [S. l.], v. 32, n. 2, p. 125–161, 2017. Disponível em: https://revista-em.unex.es/index.php/EM/article/view/2605-5686.32.2.125.. Acesso em: 21 dec. 2024.