1. B. C. CARTER 1929 British Patent No. 337, 446.
2. A large number of additional references are contained therein;Ker Wilson,1968
3. Nonlinear vibrations: a comparative study with application to centrifugal pendulum vibration absorbers;Newland,1963
4. Non-linear aspects of centrifugal pendulum vibration absorbers;Newland;Journal of Engineering for Industry,1964
5. Chaotic motions of a torsional vibration absorber;Shaw;Journal of Applied Mechanics,1988