%0 Journal Article
%A Talia Fernós
%A Alain Valette
%T The Mayer–Vietoris sequence for graphs of groups, property (T), and the first $\ell^2$-Betti number
%J Homology, homotopy, and applications
%D 2017
%P 251-274
%V 19
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4310/HHA.2017.v19.n2.a13/
%R 10.4310/HHA.2017.v19.n2.a13
%G en
%F HHA_2017_19_2_a12