US, G. F.; LYTVYNOV, E. W. Dual Appell systems in non-Gaussian white noise calculus. Methods of Functional Analysis and Topology, [S. l.], v. 2, n. 2, p. 70–85, 1996. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/14. Acesso em: 19 dec. 2025.