RANICKI, Andrew. The algebraic theory of finiteness obstruction. MATHEMATICA SCANDINAVICA, [S. l.], v. 57, p. 105–126, 1985. DOI: 10.7146/math.scand.a-12107. Disponível em: https://tidsskrift.dk/math/article/view/12107. Acesso em: 14 aug. 2026.