SALOMONSEN, Hans Anton. Bordism and Geometric Dimension. Mathematica Scandinavica, Berkeley, CA, United States, v. 32, p. 87–111, 1973. DOI: 10.7146/math.scand.a-11447. Disponível em: https://journals.msp.org/mscand/article/view/2163. Acesso em: 25 jul. 2026.