P. O. MOGOTU; N. B. OKELO; OMOLO ONGATI. On Compactness of Similarity Orbits of Norm-Attainable Operators. International Journal of Mathematics And its Applications, [S. l.], v. 7, n. 2, p. 13–21, 2019. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/242. Acesso em: 27 apr. 2024.