PARSON, L. Alayne; ROSEN, Kenneth H. Hecke operators and Lambert series. Mathematica Scandinavica, Berkeley, CA, United States, v. 49, p. 5–14, 1981. DOI: 10.7146/math.scand.a-11918. Disponível em: https://journals.msp.org/mscand/article/view/1748. Acesso em: 25 jul. 2026.