机译:Airlines' eco-productivity changes and the European Union Emissions Trading System
Vietnam Maritime Univ, Fac Foreign Languages, 484 Lach Tray St, Haiphong, Vietnam;
Natl Taiwan Ocean Univ, Dept Transportat Sci, 2 Pei Ning Rd, Keelung 20224, Taiwan;
Natl Taiwan Ocean Univ, Dept Shipping & Transportat Management, 2 Pei Ning Rd, Keelung 20224, Taiwan;
The European Union Emissions Trading System; Airlines in the European Economic Area; Data envelopment analysis; Non-convex global Malmquist-Luenberger pro-ductivity index; Non-convex global technology;