@article{GDZPPN002198878, title = {Cuspidal newforms and character twists.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, volume = {329}, year = {1981}, pages = {58-71}, zbl = {0455.10016}, url = {http://dml.mathdoc.fr/item/GDZPPN002198878} }
Shemanske, Thomas. Cuspidal newforms and character twists.. Journal für die reine und angewandte Mathematik, Tome 329 (1981) pp. 58-71. http://gdmltest.u-ga.fr/item/GDZPPN002198878/