DAVIDSON, K. R. Almost commuting Hermitian matrices. MATHEMATICA SCANDINAVICA, [S. l.], v. 56, p. 222–240, 1985. DOI: 10.7146/math.scand.a-12098. Disponível em: https://www.mscand.dk/article/view/12098. Acesso em: 24 nov. 2024.