(peinture, sculpture, Groupe Nul, Gutai, art cinétique, action, performance, happenings, lumière, mouvement, monochromes, Japon, Italie, Allemagne, Galerie Alfred Schmela, Arman, Armando, Bernard Aubertin, Hermann Bartels, Pol Bury, Enrico Castellani, Gianni Colombo, Dadamaino, Piero Dorazio, Lucio Fontana, Hermann Goepfert, Gerhard von Graevenitz, Gotthard Graubner, Hans Haacke, Jan Henderikse, Oskar Holweck, Akira Kanayama, Yves Klein, Yayoi Kusama, Walter Leblanc, Francesco Lo Savio, Adolf Luther, Heinz Mack, Piero Manzoni, Almir Marvignier, Christian Megert, François Morellet, Sadamasa Motonaga, Saburo Murakami, Henk Peeters, Otto Piene, Uli Pohl, Hans Salentin, Jan Schoonhoven, Shozo Shimamoto, Fujiko Shriraga, Kazuo Shiraga, Jesus Rafael Soto, Daniel Spoerri, Atsuko Tanaka, Jean Tinguely, Gunther Uecker, Jef Verheyen, Nanda Vigo, herman de vries, Paul de Vree, Jan Bruyndonkx, Jos Pustjens…)