KÖHLER, G. Some eta-identities arising from theta series. MATHEMATICA SCANDINAVICA, [S. l.], v. 66, p. 147–154, 1990. DOI: 10.7146/math.scand.a-12299. Disponível em: https://www.mscand.dk/article/view/12299. Acesso em: 18 may. 2024.