GALBA, E. F.; DEINEKA, V. S.; SERGIENKO, I. V. Existence and uniqueness of weighted pseudoinverse matrices and weighted normal pseudosolutions with singular weights. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 1, p. 80–101, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2700. Acesso em: 14 apr. 2025.