%0 Journal Article %A Peter Stollmann %T A dual characterization of length spaces with application to Dirichlet metric spaces %J Studia Mathematica %D 2010 %P 221-233 %V 198 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm198-3-2/ %R 10.4064/sm198-3-2 %G en %F 10_4064_sm198_3_2