SPITZWECK, Markus; ØSTVÆR, Paul Arne. A Bott inverted model for equivariant unitary topological $K$-theory. Mathematica Scandinavica, Berkeley, CA, United States, v. 106, n. 2, p. 211–216, 2010. DOI: 10.7146/math.scand.a-15133. Disponível em: https://journals.msp.org/mscand/article/view/564. Acesso em: 24 jul. 2026.