Michaelides PG, Belegri-Roboli A, gKarlaftis M, Marinos T. International Air Transportation Carriers: Evidence from SFA and DEA Technical Efficiency Results (1991-2000). EJTIR [Internet]. 2009 Sep. 1 [cited 2024 Apr. 20];9(4). Available from: https://journals.open.tudelft.nl/ejtir/article/view/3317