Exhibiting artists: Giovanni Anselmo, Keith Arnatt, John Baldessari, Joseph Beuys, Alighiero Boetti, Marinus Boezum, Stanley Brouwn, Daniel Buren, Pierpaolo Calzolari, Jan Dibbets, Gino de Dominicis, Ger van Elk, Barry Flanagan, Hamish Fulton, Gilbert & George, Michael Heizer, Wolf Knoebel, Gary Kuehn, Richard Long, Walter De Maria, Mario Merz, Dennis Oppenheim, Klaus Rinke, Ulrich Rückriem, Reiner Ruthenbeck, Richard Beck, Richard Serra, Robert Smithson, Keith Sonnier, Franz Erhard Walther, Lawrence Weiner and Gilberto Zorio