1. Leadership and action: a winning combination;Aaronson;ICAO J.,2007
2. Management of airport congestion through slot allocation;Abeyratne;J. Air Transport Manage.,2000
3. Airport Technology, 2009, 23 February. Expansion bucks the economic trend. Web site: http://www.airport-technology.com/features/feature49850/.
4. The costs of bird strikes and bird strike prevention;Allan,2002
5. Alternative Field Crops Manual, 1989. University of Minnesota CAPAP, MN, USA.