%0 Journal Article %A Jürgen Hausen %T A generalization of Mumford's geometric invariant theory %J Documenta mathematica %D 2001 %P 571-592 %V 6 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/114/ %R 10.4171/dm/114 %F 10_4171_dm_114