%0 Journal Article %A Sousa Pinto, J. %T Ultradistributions and continuous linear operators from Z into Z' %J Portugaliae mathematica %D 1991 %P 25-32 %V 48 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1991__48_1_115738/ %G en %F PORMA_1991__48_1_115738