GILMER, R. W. ,. J. Some Applications of the Hilfssatz von Dedekind Mertens. MATHEMATICA SCANDINAVICA, [S. l.], v. 20, p. 240–244, 1967. DOI: 10.7146/math.scand.a-10833. Disponível em: https://www.mscand.dk/article/view/10833. Acesso em: 5 may. 2024.