%0 Journal Article %A Ronald Brown %A Ghafar H. Mosa %T Double categories, 2-categories, thin structures and connections %J Theory and applications of categories %D 1999 %P 163-175 %V 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_1999_5_a6/ %G en %F TAC_1999_5_a6