@article{10_4064_aa107_1_3, author = {Stefan K\"uhnlein}, title = {Cohomology sets inside arithmetic groups}, journal = {Acta Arithmetica}, pages = {27--33}, publisher = {mathdoc}, volume = {107}, number = {1}, year = {2003}, doi = {10.4064/aa107-1-3}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/aa107-1-3/} }