Getulio Alviani, Keith Arnatt, Art & Language, Tauba Auerbach, Ay-O, Larry Bell & Guy de Cointet, Joseph Beuys, Marcel Broodthaers, Stanley Brouwn, Ernst Caramelle, Conceptual Art, Robert Filliou, Franklin Furnace, Gilbert & George, Sigurdur Gudmundsson, Douglas Huebler, Dorothy Iannone, Sol LeWitt, Henk Peeters, Danny Matthys, Mario Merz, Annette Messager, Enzo Minarelli, Bruno Munari, Bruce Nauman, Gerhard Richter, Dieter Roth, Suzanne Santoro, Michael Snow, Georgina Starr, Structure Magazine, Athena Tacha, Renate Weh, Lawrence Weiner, Rachel Whiteread, Hannah Wilke.