2007 Christie's Images Limited
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Courtesy Wolfram Morath-Vogel, Foto: Dirk Urban, Erfurt
Courtesy Villa Grisebach, Berlin
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2004 Christie's Images Limited
Courtesy Galerie Thomas, München
Archiv Eigentümer(in) / Owner's archive
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Photograph Courtesy of Sotheby's, Inc. © 2002
Courtesy Thomas Ammann Fine Art AG
Courtesy Hauser & Wirth Collection Services
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