1. Mechanical Vibrations for Engineers;Lalanne,1983
2. Vibration and Shock in Damped Mechanical Systems;Snowden,1968
3. The Dynamical Behaviour of Structures;Warburton,1976
4. Theory of Elasticity;Timoshenko,1951
5. Formulas for integrals containing characteristics functions of a vibrating beam;Felgar;University of Texas, Circular No. 14,1950