%0 Journal Article %A Antoni Leon Dawidowicz %T On the positivity of an invariant measure on open non-empty sets %J Annales Polonici Mathematici %D 1989 %P 185-190 %V 50 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-50-2-185-190/ %R 10.4064/ap-50-2-185-190 %G en %F 10_4064_ap_50_2_185_190