%0 Journal Article %A Martin Olbrich %T $L^2$-invariants of locally symmetric spaces %J Documenta mathematica %D 2002 %P 219-237 %V 7 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/125/ %R 10.4171/dm/125 %F 10_4171_dm_125