Artists: Georg Baselitz, Joseph Beuys, Anselm Kiefer, Imi Knoebel, Blinky Palermo, A.R. Penck, Sigmor Polke, Gerhard Richter, Rosemarie Trockel; Carl Andre, Richard Artschwager, John Chamberlain, Dan Flavin, Donald Judd, On Kawara, Bruce Nauman, Frank Stella, Cy Twombly, Andy Warhol.