RAHIMI, A.; FAROUGHI, M. H.; ABDOLLAHPOUR, M. R. $pg$-frame in Banach spaces. Methods of Functional Analysis and Topology, [S. l.], v. 13, n. 3, p. 201–210, 2007. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/349. Acesso em: 16 dec. 2025.