TEAM, S. Idempotents and Similar Operators: A.K. Gaur. Thai Journal of Mathematics, [S. l.], v. 10, n. 1, p. 35–41, 2012. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/299. Acesso em: 19 may. 2024.