%0 Journal Article %A Itay Ben-Yaacov %T Thickness, and a categoric view of type-space functors %J Fundamenta Mathematicae %D 2003 %P 199-224 %V 179 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm179-3-2/ %R 10.4064/fm179-3-2 %G en %F 10_4064_fm179_3_2