%0 Journal Article %A Bordalo, G. %T A duality between unary algebras and their subuniverse lattices %J Portugaliae mathematica %D 1989 %P 431-439 %V 46 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1989__46_4_115682/ %G en %F PORMA_1989__46_4_115682