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^Krzysztofowicz-Kozakowska, Stefania; Mizia, Piotr. "'Sztuka', 'Wiener Secession', 'Mánes'. The Central European Art Triangle." Artibus et Historiae, Vol. 27, No. 53, p. 217, 221 (2006).
^Howard, Jeremy. Art Nouveau: International and National Styles in Europe. Manchester: Manchester University Press, 1996, p. 83.