%0 Journal Article %A Jiri Adamek %A G. M. Kelly %T ${\cal M}$-Completeness is seldom monadic over graphs %J Theory and applications of categories %D 2000 %P 171-205 %V 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2000_7_a7/ %G en %F TAC_2000_7_a7