1. Modal Testing;Ewins,2000
2. Modal Analysis Theory and Testing;Heylen,1997
3. Theoretical and Experimental Modal Analysis;Maia,1997
4. The natural excitation technique (NExT) for modal parameter extraction from operating structures;James;International Journal of Analytical and Experimental Modal Analysis,1995
5. S.R. Ibraham, Efficient random decrement computation for identification of ambient responses, in: Proceedings of the 19th IMAC, Orlando, FL, 2001, pp. 698–703.