1. Beazley R. H. Aircraft wheel spinner and control. U.S. Patent, Publication No. US2414849 A. Washington, DC: U.S. Patent and Trademark Office. Retrieved from http://www.google.com/patents/US2414849 (1947).
2. Khal S., & Khal A. Apparatus for pre-rotating aircraft tires. U.S. Patent, Publication No. US20130112809A1, (2013).
3. Boeing Commercial Airplane Co. Approach speeds for Boeing airplanes. Retrieved from http://www.boeing.com/assets/pdf/commercial/airports/faqs/arcandapproachspeeds.pdf, (2011).
4. Dahl P. R. A solid friction model. The Aerospace Corporation. Technical report. Los Angeles: Los Angeles Air Force Station. Retrieved from www.dtic.mil/dtic/tr/fulltext/u2/a041920.pdf, (1968).
5. Airplane Landing Performance on Contaminated Runways in Adverse Conditions