1. R. Actis, A.D. Dimarogonas, Non-linear effects due to closing cracks in vibrating beams, Vibration and noise, 17–20 September 1989, pp. 99–104.
2. The dynamic behaviour and crack detection of a beam with a crack;Qian;Journal of Sound and Vibration,1990
3. Harmonic analysis of the vibrations of a cantilevered beam with a closing crack;Ruotolo;Computers & Structures,1996
4. B.G. Lamonaca, C. Valente, F. Brancaleoni, Crack identification in nonlinear vibrating beams, in: Proceedings of the International Modal Analysis Conference (IMAC), Vol. 2, SEM, Bethel, CT, United States, 1997, pp. 1808–1814.
5. Non-linear dynamics of a cracked cantilever beam under harmonic excitation;Andreaus;International Journal of Non-Linear Mechanics,2007