"Galerie Alex Lachmann, Cologne, North Rhine-Westphalia, Germany. Great Utopia: the Russian and Soviet Avant-Garde, 1915-1932 , New York: Guggenheim Museum, 1992"@en . . "Galerie Alex Lachmann"@en . . "2015-07-16"^^ . "2015-07-16"^^ . . .