HANSEN, V. L. On the Homotopy Type of Certain Spaces of Differentiable Maps. MATHEMATICA SCANDINAVICA, [S. l.], v. 30, p. 75–87, 1972. DOI: 10.7146/math.scand.a-11065. Disponível em: https://www.mscand.dk/article/view/11065. Acesso em: 28 apr. 2024.