KONO, Akira; MIMURA, Mamoru. Cohomology mod 3 of the classifying space of the Lie group $E_6$. MATHEMATICA SCANDINAVICA, [S. l.], v. 46, p. 223–235, 1980. DOI: 10.7146/math.scand.a-11865. Disponível em: https://www.mscand.dk/article/view/11865. Acesso em: 5 dec. 2025.