KLOVE, T. The minimal range of additive $h$-bases. MATHEMATICA SCANDINAVICA, [S. l.], v. 53, p. 157–177, 1983. DOI: 10.7146/math.scand.a-12023. Disponível em: https://www.mscand.dk/article/view/12023. Acesso em: 5 may. 2024.