1. Air Transport Action Group. Aviation: Benefits Beyond Borders. Geneva, Switzerland, 2014.
2. Anselin, L., 1998. Exploratory spatial data analysis in a geocomputational environment. In “Geocomputation, a primer.”. In: Longley, P.A., Brooks, S.M., McDonnell, R., Macmillan, B. (Eds.). Wiley
3. Air Traffic Management: Economics, Regulation and Governance;Arblaster,2018
4. Interactive spatial data analysis;Bailey,1995
5. Comparing European ATM master plan and the NextGen implementation plan;Batchelor,2015