KRISTENSEN, L.; MADSEN, I. Note on Whitehead Products in Spheres. MATHEMATICA SCANDINAVICA, [S. l.], v. 21, p. 301–314, 1967. DOI: 10.7146/math.scand.a-10865. Disponível em: https://www.mscand.dk/article/view/10865. Acesso em: 24 nov. 2024.