@article{JRAM_1988__384_153004,
     author = {T. Meurman},
     title = {On exponential sums involving the {Fourier} coefficients of {Maass} wave forms.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {192--207},
     publisher = {mathdoc},
     volume = {384},
     year = {1988},
     zbl = {0627.10017},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1988__384_153004/}
}