LINDSTRÖM, Mikael; SCHÜCHTERMANN, Georg. Composition of operator ideals. Mathematica Scandinavica, Berkeley, CA, United States, v. 84, n. 2, p. 284–296, 1999. DOI: 10.7146/math.scand.a-13880. Disponível em: https://journals.msp.org/mscand/article/view/948. Acesso em: 25 jul. 2026.