SALOMONSEN, H. A. Bordism and Geometric Dimension. MATHEMATICA SCANDINAVICA, [S. l.], v. 32, p. 87–111, 1973. DOI: 10.7146/math.scand.a-11447. Disponível em: https://www.mscand.dk/article/view/11447. Acesso em: 2 may. 2024.