VAROPOULOS, N. T. A theorem on operator algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 37, p. 173–182, 1975. DOI: 10.7146/math.scand.a-11599. Disponível em: https://www.mscand.dk/article/view/11599. Acesso em: 24 nov. 2024.