George Grosz (New Haven and London: Yale University Press, 1985), 101f.
Carl Einstein 'Otto Dix’,
Das Kunstblatt,
vol. 7 (1923), 97.
Christopher Green,
Art in France 1900-1940 (New Haven: Yale University Press, 2003), 335.
Tim Hilton,
(London: Thames and Hudson, 1975), 246.
Blunt, cit. Green, op. cit., 286.
Green, op. cit., 289.
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