RÖDSETH, Öystein J. On $h$-bases for $n$. Mathematica Scandinavica, Berkeley, CA, United States, v. 48, p. 165–183, 1981. DOI: 10.7146/math.scand.a-11909. Disponível em: https://journals.msp.org/mscand/article/view/1717. Acesso em: 25 jul. 2026.