Greer MR (2006). “Are the Discount Airlines Actually More Efficient Than the Legacy Carriers?: A Data Envelopment Analysis.” Int J Transport Economics 33(1): 37-55.

Greer MR (2006). “Are the Discount Airlines Actually More Efficient Than the Legacy Carriers?: A Data Envelopment Analysis.” Int J Transport Economics 33(1): 37-55.

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