TRIPATHI, G. P. Algebraic Elementary Operators on B(E). Tamkang Journal of Mathematics, [S. l.], v. 43, n. 3, p. 463–468, 2012. DOI: 10.5556/j.tkjm.43.2012.866. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/866. Acesso em: 8 may. 2024.