MIRANDA, H.; THOMPSON, R. C. A trace inequality with a subtracted term. CUBO, A Mathematical Journal, [S. l.], n. 8, p. 91–97, 1992. Disponível em: https://www.perspectivasdelacomunicacion.cl/ojs/index.php/cubo/article/view/1574. Acesso em: 20 may. 2024.