(Herman & Nicole Daled, couple de collectionneurs belges, Bruxelles, München, weniger ist mehr, Birgit Pelzer, Benjamin H. D. Buchloh, art conceptuel, conceptual, art minimal, Vito Acconci, Carl Andre, Robert Barry, Mel Bochner, Marcel Broodthaers, Stanley Brouwn, Daniel Buren, James Lee Byars, Andre Cadere, Jacques Charlier, Hanne Darboven, Robert De Boeck, Jan Dibbets, Peter Downsbrough, Robert Filliou, Gilbert & George, Dan Graham, Douglas Huebler, Jorg Immendorff, On Kawara, David Lamelas, Sol LeWitt, Richard Long, Martin Maloney, Bruce Nauman, Dennis Oppenheim, Giulio Paolini, Peter Roehr, Robert Ryman, Jan Schoonhoven, Niele Toroni, Cy Twombly, Ger van Elk, Didier Vermeiren, Carel Visser, Lawrence Weiner, Ian Wilson…)