1. Craig R R 1981 Structural Dynamics. John Wiley & Sons
2. Maia N M M and e Silva J M M 1997 Theoretical and experimental modal analysis. Research Studies Press
3. Tesche F M, Ianoz M and Karlsson T 1997 EMC Analysis Methods and Computational Models. John Wiley & Sons
4. Chopra A K 2016 Dynamics of Structures: Theory and Aplications to Earthquake Engineering (5th Edition), Upper Saddle River, NJ: Pearson/Prentice Hall
5. Avitabile P 2018 Modal Testing: A Practitioner’s Guide. John Wiley & Sons