A Note on a Theorem of J. Szabados. Analysis in Theory and Applications, [S. l.], v. 29, n. 3, p. 275–279, 2013. DOI: 10.4208/ata.2013.v29.n3.7. Disponível em: https://global-sci.com/index.php/ata/article/view/7989. Acesso em: 5 dec. 2025.