Columbia subject headings:
Beuys, Joseph--Influence.
Schlingensief, Christoph, 1960-2010.
Harvard subject headings:
Beuys, Joseph--Influence.
Schlingensief, Christoph, 1960-2010
Princeton subject headings:
Arts, German--20th century.
Beuys, Joseph--Influence.
Schlingensief, Christoph, 1960-2010--Criticism and interpretation.
Theater--Germany.