DIRDAL, G. Congruences for the Fourier coefficients of certain modular forms. MATHEMATICA SCANDINAVICA, [S. l.], v. 39, p. 131–145, 1976. DOI: 10.7146/math.scand.a-11651. Disponível em: https://www.mscand.dk/article/view/11651. Acesso em: 28 apr. 2024.