@article{JRAM_1981__328_152394,
     author = {Thomas Shemanske},
     title = {Cuspidal newforms and character twists.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {58--71},
     publisher = {mathdoc},
     volume = {328},
     year = {1981},
     zbl = {0455.10016},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1981__328_152394/}
}