Günther Uecker, letter to China, works on paper : [this catalogue appears on the occasion of the exhibit "Günther Uecker, letter to China, works on paper" in the Tianjin Art Museum, TAFA Gallery, People's [...] / ed.: Dirk Geuer ... Texts and authors: Alexander Tolnay ... Düsseldorf : Verl.-Gruppe Geuer & Breckner, 2006