%0 Journal Article %A Lintz, R.G. %T Extension of the concept of n-function to categories %J Portugaliae mathematica %D 1987 %P 1-23 %V 44 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1987__44_1_115565/ %G en %F PORMA_1987__44_1_115565