@article{GDZPPN002318997,
title = {Cohomology of Congruence Subgroups of SL (n,Z).},
journal = {Mathematische Annalen},
volume = {250},
year = {1980},
pages = {55-74},
zbl = {0438.20035},
url = {http://dml.mathdoc.fr/item/GDZPPN002318997}
}
Ash, Avner. Cohomology of Congruence Subgroups of SL (n,Z).. Mathematische Annalen, Tome 250 (1980) pp. 55-74. http://gdmltest.u-ga.fr/item/GDZPPN002318997/