%0 Journal Article
%A Lenz, Daniel
%A Stollmann, Peter
%A Veselić, Ivan
%T The Allegretto-Piepenbrink theorem for strongly local Dirichlet forms
%J Documenta mathematica
%D 2009
%P 167-189
%V 14
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DOCMA_2009__14__a21/
%G en
%F DOCMA_2009__14__a21