1. Modal correlation approaches for general second-order systems: matching mode pairs and an application to Campbell diagrams;Alkhfaji;Journal of Sound and Vibration,2011
2. Eigenvalue and eigenvector derivatives of second-order systems using structure-preserving equivalences;Abuazoum;Journal of Sound and Vibration,2009
3. J. O'Callahan, C.M. Chou, Study of a structural modification procedure with three dimensional beam elements using a local eigenvalue modification procedure, Second International Modal Analysis Conference, Orlando, FL, 1984.
4. John C. O'Callahan, I.W. Lieu, Peter Avitabile, Richard Madden, An efficient method of determining rotational degrees of freedom from analytical and experimental modal data, Proceedings of the Fourth International Modal Analysis Conference, Los Angeles, 1986.
5. Reduction of structural frequency equations (Mass and stiffness matrices reduction in determining linearly elastic structure natural modes and frequencies with computational accuracy improvement);Kidder;AIAA Journal,1973