%0 Journal Article
%A Lauter, Robert
%A Nistor, Victor
%T On spectra of geometric operators on open manifolds and differentiable groupoids
%J Electronic research announcements of the American Mathematical Society
%D 2001
%P 45-53
%V 07
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-01-00093-2/
%R 10.1090/S1079-6762-01-00093-2
%F 10_1090_S1079_6762_01_00093_2