DMYTRYSHYN, M.I. The spaces of exponential type vectors of complex degrees of positive operators. Carpathian Mathematical Publications, [S. l.], v. 2, n. 2, p. 21–30, 2010. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/3963. Acesso em: 4 may. 2024.