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@article{JRAM_1989__399_153158, author = {Isaac Efrat}, title = {On the existence of cusp forms over function fields.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {173--187}, publisher = {mathdoc}, volume = {399}, year = {1989}, zbl = {0667.10014}, url = {http://geodesic.mathdoc.fr/item/JRAM_1989__399_153158/} }
Isaac Efrat. On the existence of cusp forms over function fields.. Journal für die reine und angewandte Mathematik, Tome 399 (1989), pp. 173-187. http://geodesic.mathdoc.fr/item/JRAM_1989__399_153158/