@article{JRAM_1980__319_152279,
     author = {G. Harder and W.-C.W Li and J.R. Weisinger},
     title = {Dimensions of spaces of cusp forms over function fields.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {73--103},
     publisher = {mathdoc},
     volume = {319},
     year = {1980},
     zbl = {0431.22015},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1980__319_152279/}
}