In 1966 Brus collaborated with Muehl on a number of performances. After 1967, however, Brus's Aktionen began to push him to further physical and mental extremes as he analysed his own body and its functions. All symbolism was dispensed with as Brus publicly urinated, defecated and cut himself with a razor-blade. He returned to painting, drawing and the production of artists' books. In 1971 he held his first exhibition of drawings at the Galerie Michael Werner in Cologne, while his book Irrwisch (1971) formed a link between the Aktion and the book form by containing the grotesque sexual humour and cathartic intention found in his actions.
Günter Brus: Zeichnungen und Schriften (exh. cat., text J. Gachnang and A. Meifert; Berne, Ksthalle, 1976)
Günter Brus: Bild-Dichtungen (exh. cat. by A. Meifert, London, Whitechapel A.G.; Hamburg, Kstver.; Lucerne, Kstmus.; Graz, Kulthaus; 1980–81)
Augensternstunden (exh. cat., foreword R. H. Fuchs; Eindhoven, Stedel. Van Abbemus., 1984)
H. Amanhauser and D. Ronte: Gunter Brus: Der Überblick (Vienna, 1986)
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