HASSI, S.; MALAMUD, M. M.; MOGILEVSKII, V. I. Generalized resolvents and boundary triplets for dual pairs of linear relations. Methods of Functional Analysis and Topology, [S. l.], v. 11, n. 2, p. 170–187, 2005. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/275. Acesso em: 16 dec. 2025.