%0 Journal Article %A Priestley, H.A. %A Bordalo, G. %T Negation operations definable on finite distributive lattices %J Portugaliae mathematica %D 1992 %P 37-49 %V 49 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1992__49_1_115777/ %G en %F PORMA_1992__49_1_115777