BRATTELI, O.; HERMAN, R. H. ,robinson,. D. W. Quasianalytic vectors and derivations of operator algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 39, p. 371–381, 1976. DOI: 10.7146/math.scand.a-11670. Disponível em: https://www.mscand.dk/article/view/11670. Acesso em: 27 apr. 2024.