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...November cost benchmarking of air navigation service providers a stochastic frontier analysis final report project team stuart holder dr barbara veronese paul metcalfe federico mini stewart carter bruno basalisco nera economic consulting stratford place london wc be united kingdom tel fax www com ansps contents glossary i executive summary ii introduction background in other industries provision function for theory costs and production specific issues relating to ansp data used the outputs input prices network size traffic characteristics descriptive statistics econometric model specification estimation methods models cross sectional panel our approach results efficiency robustness checks concluding remarks lessons learnt possible directions future research references appendix functions b section specifications...