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						Air Transport versus High-Speed Rail: From Physics to Economics Gregorian, Hayk. - Hamburg : Aircraft Design and Systems Group (AERO), Department of Automotive and Aeronautical Engineering, Hamburg University of Applied Sciences, 2019
					
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						Air Transport versus High-Speed Rail: From Physics to Economics Gregorian, Hayk. - Hamburg : HAW Hamburg, 2019
					
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						Ein Verkehrsmittelwahlmodell für den Personenfernverkehr auf der Basis von Verkehrswiderständen Norta, Manuel. - Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013
					
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						Efficiency and competition in public transport Walter, Matthias, 2010
					
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						American commute travel behavior and the possibility of modal split management by private enterprises Carr, Kerstin, 2008, [Online-Ausg.]
					
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