1. Aircraft landing gear design: principles and practices;Currey;AIAA Education Series, AIAA,1998
2. R. Freymann, Actively damped landing gear system, Landing Gear Design Loads Conference No. 20, AGARD CP-484, 1991.
3. An experimental–analytical routine for the dynamic qualification of aircraft operating on rough runway surfaces;Freymann;AGARD R-731,1987
4. T. Catt, D. Cowling, A. Shepherd, Active landing gear control for improved ride quality during ground roll, SDL Report No. 232, Stirling Dynamics Limited, 1992.
5. Dynamic response of landing gears on rough repaired runway;Lee;Menasco Aero Systems Division,1998