YAMASHITA, Shinji. A gap series with growth conditions and its applications. Mathematica Scandinavica, Berkeley, CA, United States, v. 60, p. 9–18, 1987. DOI: 10.7146/math.scand.a-12167. Disponível em: https://journals.msp.org/mscand/article/view/1463. Acesso em: 25 jul. 2026.