%0 Journal Article %A Davis, Harvey S. %A Swingle, Paul M. %T Extended topologies and iteration and recursion of set-functions %J Portugaliae mathematica %D 1964 %P 103-129 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1964__23_2_114923/ %G en %F PORMA_1964__23_2_114923