PEDERSEN, E. K. Smoothing H-spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 43, p. 185–196, 1978. DOI: 10.7146/math.scand.a-11774. Disponível em: https://www.mscand.dk/article/view/11774. Acesso em: 19 may. 2024.