KOLBERG, O. Note on Ramanujan’s Function $\tau(n)$. MATHEMATICA SCANDINAVICA, [S. l.], v. 10, p. 171–172, 1962. DOI: 10.7146/math.scand.a-10524. Disponível em: https://tidsskrift.dk/math/article/view/10524. Acesso em: 14 aug. 2026.