@article{GDZPPN002202298,
title = {Arithmetic cycles on Picard modular surfaces and modular forms of Nebentypus.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {358},
year = {1985},
pages = {115-137},
zbl = {0547.10028},
url = {http://dml.mathdoc.fr/item/GDZPPN002202298}
}
Cogdell, J.W. Arithmetic cycles on Picard modular surfaces and modular forms of Nebentypus.. Journal für die reine und angewandte Mathematik, Tome 358 (1985) pp. 115-137. http://gdmltest.u-ga.fr/item/GDZPPN002202298/