1. ^acejka, H. B. "The Wheel Shimmy Phenomenon," Ph.D. Thesis,Delft Technical Institute, Holland, Dec. 1966.
2. Theories on the mechanics of tires and their applications to shimmy analysis
3. 3Nybakken, G. H. "Investigation of Tire Parameter Variations in Wheel Shimmy," Ph.D. Dissertation,University of Michigan, Dept. of Applied Mechanics,1973.
4. 4Podgorski, W. A."The Wheel Shimmy Problem: Its Relationship to Longitudinal Tire Forces, Vehicle Motions and Normal Load Oscillations," Ph.D. Thesis,Cornell University, Dept. of Engineering Mechanics,1974.