OKWANY, I.O; OKELO, N.B; ONGATI, O. Numerical radii inequalities for derivations induced by orthogonal projections. International Journal of Modern Computation, Information and Communication Technology, [S. l.], v. 4, n. 1, p. 7–12, 2021. DOI: 10.65000/cj7p9549. Disponível em: https://gjpublications.com/index.php/IJMCICT/article/view/62. Acesso em: 5 feb. 2026.