1. Atlas D, Wang Z, Duda DP (2006) Contrails to cirrus—Morphology, microphysics, and radiative properties. J Appl Meteorol Climatol 45:5–19. doi: 10.1175/JAM2325.1
2. Burkhardt U, Kärcher B (2011) Global radiative forcing from contrail cirrus. Nat Clim Change 1:54–58
3. E Team (2015), ESRL Global Monitoring Division—GRAD Group. Available: http://www.esrl.noaa.gov/gmd/grad/solcalc/sollinks.html , 7 May 2015
4. European ATM Master Plan—The roadmap for sustainable air traffic management, SESAR JU, Brussels, Belgium, 2012
5. Flightpath 2050: Europe’s vision for aviation—Report of the high level group on aviation research. European Commission—Directorate General for Mobility and Transport, Luxemburg, 2011