Olejko, A. 2021. Ohne Flieger kein Sieg – No Aviators, No Victory! A sketch on the activities of the Austro-Hungarian and German aviation on the eve of the Breakthrough at Gorlice in 1915 in the light of archival materials and diary literature. Galicja. Studia i materiały. 7 (Dec. 2021), 81–106. DOI:https://doi.org/10.15584/galisim.2021.7.5.