COURTNEY, D.; SARASON, D. A mini-max problem for self-adjoint Toeplitz matrices. MATHEMATICA SCANDINAVICA, [S. l.], v. 110, n. 1, p. 82–98, 2012. DOI: 10.7146/math.scand.a-15198. Disponível em: https://www.mscand.dk/article/view/15198. Acesso em: 23 apr. 2024.