%0 Journal Article %A K. MusiaƂ %A W. Strauss %A N. D. Macheras %T Product liftings and densities with lifting invariant and density invariant sections %J Fundamenta Mathematicae %D 2000 %P 281-303 %V 166 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-166-3-281-303/ %R 10.4064/fm-166-3-281-303 %G en %F 10_4064_fm_166_3_281_303