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Dankmar Trier: "Humplik, Josef". In: Allgemeines Künstlerlexikon. Die Bildenden Künstler aller Zeiten und Völker (AKL). Band 75, de Gruyter, Berlin 2012, ISBN9783110231809, pp. 493 f.
Heeresgeschichtliches Museum (Militärwissenschaftliches Institut): Fliegen 90/71. Katalog zur Ausstellung, Band II: Fliegen im Ersten Weltkrieg, Gemälde und Zeichnungen. Wien 1971
Ilse Krumpöck: Die Bildwerke im Heeresgeschichtlichen Museum, Wien 2004, p. 79
