JAMALI, H.; HEMMAT, A. A. Approximated Solutions to Operator Equations based on the Frame Bounds. Communications in Mathematics and Applications, [S. l.], v. 3, n. 3, p. 253–259, 2012. DOI: 10.26713/cma.v3i3.209. Disponível em: https://www.journals.rgnpublications.com/index.php/cma/article/view/209. Acesso em: 18 aug. 2025.