%0 Journal Article
%A Ershov, Mikhail
%A Lück, Wolfgang
%T The first $L^2$-Betti number and approximation in arbitrary characteristic
%J Documenta mathematica
%D 2014
%P 313-331
%V 19
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DOCMA_2014__19__a35/
%G en
%F DOCMA_2014__19__a35