DUNDAS, Bjorn Ian. Fibrations and homology sphere bordism. MATHEMATICA SCANDINAVICA, [S. l.], v. 72, p. 20–28, 1993. DOI: 10.7146/math.scand.a-12433. Disponível em: https://tidsskrift.dk/math/article/view/12433. Acesso em: 14 aug. 2026.