%0 Journal Article %A Guy, Douglas L. %T Common extensions of finitely additive probability measures %J Portugaliae mathematica %D 1961 %P 1-5 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1961__20_1_114845/ %G en %F PORMA_1961__20_1_114845