FRODA, Alexandre. Critères paramétriques d’irrationalité. Mathematica Scandinavica, Berkeley, CA, United States, v. 12, p. 199–208, 1963. DOI: 10.7146/math.scand.a-10683. Disponível em: https://journals.msp.org/mscand/article/view/2641. Acesso em: 25 jul. 2026.