@article{GDZPPN002321432,
title = {A Nonvanishing Theorem for the Cuspidal Cohomology of SL2 Over Imaginary Quadratic Integers.},
journal = {Mathematische Annalen},
volume = {255},
year = {1981},
pages = {183-200},
zbl = {0458.20041},
url = {http://dml.mathdoc.fr/item/GDZPPN002321432}
}
Schwermer, Joachim; Grunewald, Fritz. A Nonvanishing Theorem for the Cuspidal Cohomology of SL2 Over Imaginary Quadratic Integers.. Mathematische Annalen, Tome 255 (1981) pp. 183-200. http://gdmltest.u-ga.fr/item/GDZPPN002321432/