%0 Journal Article %A D. Fremlin %T On the average of inner and outer measures %J Fundamenta Mathematicae %D 1991 %P 9-15 %V 139 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-139-1-9-15/ %R 10.4064/fm-139-1-9-15 %G en %F 10_4064_fm_139_1_9_15