LAITINEN, Erkki. On the Burnside ring and stable cohomotopy of a finite group. Mathematica Scandinavica, Berkeley, CA, United States, v. 44, p. 37–72, 1979. DOI: 10.7146/math.scand.a-11795. Disponível em: https://journals.msp.org/mscand/article/view/1852. Acesso em: 25 jul. 2026.