%0 Journal Article %A Stefan Kühnlein %T Cohomology sets inside arithmetic groups %J Acta Arithmetica %D 2003 %P 27-33 %V 107 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa107-1-3/ %R 10.4064/aa107-1-3 %G en %F 10_4064_aa107_1_3