%0 Journal Article %A Teimuraz Pirashvili %T Groupoid enriched categories and natural systems %J Theory and applications of categories %D 2005 %P 287-293 %V 14 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2005_14_a11/ %G en %F TAC_2005_14_a11