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Edmunds, James (2011) Challenges facing regional airport operations in Great Britain: a case study perspective of the South West of England & Wales. VISTAS: Education, Economy and Community, 1 (2). pp. 7-21. ISSN 2047-7449
Efthymiou, Marina (2016) Challenges in aviation governance: implementation of Single European Sky and EU Emissions Trading Scheme. Doctoral thesis, University of West London.