@article{10_4064_aa110_2_2,
     author = {Marvin Knopp and Geoffrey Mason},
     title = {On vector-valued modular forms
 and their {Fourier} coefficients},
     journal = {Acta Arithmetica},
     pages = {117--124},
     publisher = {mathdoc},
     volume = {110},
     number = {2},
     year = {2003},
     doi = {10.4064/aa110-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa110-2-2/}
}