SAHOO, M.; DAS, N. Positive operators on the Bergman space and Berezin transform. Methods of Functional Analysis and Topology, [S. l.], v. 17, n. 3, p. 204–210, 2011. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/485. Acesso em: 17 dec. 2025.