QUIGG, J. C. Lanstad Duality for $C^*$-Coactions. MATHEMATICA SCANDINAVICA, [S. l.], v. 71, p. 277–294, 1992. DOI: 10.7146/math.scand.a-12429. Disponível em: https://www.mscand.dk/article/view/12429. Acesso em: 14 apr. 2025.