TY - JOUR AU - Anselm Knebusch AU - Peter Linnell AU - Thomas Schick TI - On the Center-Valued Atiyah Conjecture for $L^2$-Betti Numbers JO - Documenta mathematica PY - 2017 SP - 659 EP - 677 VL - 22 UR - http://geodesic.mathdoc.fr/articles/10.4171/dm/575/ DO - 10.4171/dm/575 ID - 10_4171_dm_575 ER -