%0 Journal Article
%A W. Lück
%T Approximation L2-invariants by Their Finite-Dimensional Analogues.
%J Geometric and functional analysis
%D 1994
%P 455-482
%V 4
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/GFA_1994__4_6_58171/
%F GFA_1994__4_6_58171