TRIPATHI, G. P.; LAL, N. Antinormal composition operators on $ \mbf{\ell^2}$. Tamkang Journal of Mathematics, [S. l.], v. 39, n. 4, p. 347–352, 2008. DOI: 10.5556/j.tkjm.39.2008.9. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/9. Acesso em: 22 dec. 2024.