VASYLYSHYN, T.V. Some properties of shift operators on algebras generated by $*$-polynomials. Carpathian Mathematical Publications, [S. l.], v. 10, n. 1, p. 206–212, 2018. DOI: 10.15330/cmp.10.1.206-212. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1483. Acesso em: 8 may. 2024.