ALOYCE, M. M. .; KUMAR, S. .; MPIMBO, M. . On Scalar Multiples of Hypercyclic Operators on Non-normable and Separable Fréchet Spaces. Tanzania Journal of Science, [S. l.], v. 45, n. 3, p. 431–438, 2021. Disponível em: http://tjs.udsm.ac.tz/index.php/tjs/article/view/211. Acesso em: 25 jul. 2024.