Carl Andre, Joseph Beuys, Christo, Constant, Ian Hamilton Finlay, Dick Higgins, Asger Jorn, Ray Johnson, Joseph Kosuth, Urs Lüthi, Edition MAT, François Morellet, Hermann Nitsch, Revue NUL, Géza Perneczky, Gerhard Rühm, Richard Serra, Daniel Spoerri, Wolf Vostell, Andy Warhol.
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