%0 Journal Article %A Susan Niefield %T Exponentiability in homotopy slices of Top and pseudo-slices of Cat %J Theory and applications of categories %D 2007 %P 4-18 %V 19 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2007_19_a0/ %G en %F TAC_2007_19_a0