1. European Commission: Beyond Vision 2020 (Toward 2050), Advisory Council for Aeronautics Research in Europe, 2010.
2. International Civil Aviation Organization: ICAO Environmental Report, 2010.
3. IATA: A Global Approach to Reducing Aviation Emissions, First stop: Carbon-Neutral Growth by 2020, 2009.
4. Federal Aviation Administration: FAA Aerospace Forecast Fiscal Years 2011-2031, 2011.
5. Prevot, T., et. al.: Automated Air Traffic Control Operations with Weather and Time-Constraints: A First Look at (Simulated) Far-Term Control Room Operations, 9th USA/Europe Air Traffic Management Research and Development Seminar, 2011.