Least Squares Properties of Generalized Inverses. Communications in Mathematical Research, [S. l.], v. 37, n. 4, p. 421–447, 2022. DOI: 10.4208/cmr.2021-0011. Disponível em: https://www.global-sci.com/index.php/cmr/article/view/9057. Acesso em: 6 dec. 2025.