%0 Journal Article %A Topping, D. %T Vector lattices, Boolean rings and simple functions %J Portugaliae mathematica %D 1964 %P 199-204 %V 23 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1964__23_4_114932/ %G en %F PORMA_1964__23_4_114932