@article{10_4064_aa108_2_3,
     author = {Tsuneo Ishikawa},
     title = {On certain congruences for {Fourier} coefficients
 of classical cusp forms},
     journal = {Acta Arithmetica},
     pages = {123--126},
     publisher = {mathdoc},
     volume = {108},
     number = {2},
     year = {2003},
     doi = {10.4064/aa108-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa108-2-3/}
}