Nashif, A. D., Jones, D. I. G., and Henderson, J. P., 1985, "*Vibration Damping*", 1st ed., Wiley, New York.

Lazan, B., 1968, "*Damping of Materials and Members in Structural Mechanics*", 1st ed., Pergamon, London.

Ungar, E. E., 1973, “The Status of Engineering Knowledge Concerning the Damping of Built-Up Structures,” J. Sound Vib.

[CrossRef], 26 (1), pp. 141–154.

Phani, A. S., 2004, “Damping Identification in Linear Vibrations,” Ph.D. thesis, Cambridge University Engineering Department, Trumpington Street, Cambridge, CB2 1PZ.

Rayleigh, L., 1877, "*Theory of Sound*", 2nd ed., Dover, New York.

Ewins, D. J., 2000, "*Modal Testing: Theory and Practice*", 2nd ed., Research Studies, Baldock, England.

Maia, N. M. M., Silva, J. M. M., and Roberts, J. B., 1997, "*Theoretical and Experimental Modal Analysis*", Engineering Dynamics Series, Research Studies, Taunton, England.

Silva, J. M. M., and Maia, N. M. M., 1998, "*Modal Analysis and Testing: Proceedings of the NATO Advanced Study Institute*", NATO Advanced Study Institute, Series E: Applied Science, Sesimbra, Portugal.

Newland, D. E., 1987, “On the Modal Analysis of Nonconservative Linear Systems,” J. Sound Vib., 112 (1), pp. 69–96.

Newland, D. E., 1989, "*Mechanical Vibration Analysis and Computation*", Wiley, New York.

Bishop, R. E. D., and Johnson, D. C., 1960, "*The Mechanics of Vibration*", Cambridge University Press, Cambridge, England.

Caughey, T. K., and O’Kelly, M. E. J., 1965, “Classical Normal Modes in Damped Linear Dynamic Systems,” ASME Trans. J. Appl. Mech., 32 , pp. 583–588.

Adhikari, S., 2006, “Damping Modelling Using Generalized Proportional Damping,” J. Sound Vib.

[CrossRef], 293 (1–2), pp. 156–170.

Pilkey, D. P., and Inman, D. J., 1998, “Survey of Damping Matrix Identification,” "*Proceedings of the 16th International Modal Analysis Conference (IMAC)*", Santa Barbara, CA, February 1998, Vol. 1 .

Fabunmi, J., Chang, P., and Vorwald, J., 1988, “Damping Matrix Identification Using the Spectral Basis Technique,” Trans. ASME, J. Vib., Acoust., Stress, Reliab. Des., 110 , pp. 332–337.

Lancaster, P., 1961, “Expression of Damping Matrices in Linear Vibration Problems,” J. Aerosp. Sci., 28 , p. 256.

Hasselsman, T. K., 1972, “A Method of Constructing a Full Modal Damping Matrix From Experimental Measurements,” AIAA J., 10 (4), pp. 526–527.

Béliveau, J.-G., 1976, “Identification of Viscous Damping in Structures From Modal Information,” ASME Trans. J. Appl. Mech., 43 , pp. 335–339.

Ibrahim, S. R., 1983, “Dynamic Modeling of Structures From Measured Complex Modes,” AIAA J., 21 (6), pp. 898–901.

Minas, C., and Inman, D. J., 1991, “Identification of a Nonproportional Damping Matrix From Incomplete Modal Information,” Trans. ASME, J. Vib. Acoust.

[CrossRef], 113 , pp. 219–224.

Starek, L., and Inman, D. J., 1997, “A Symmetric Inverse Vibration Problem for Nonproportional Underdamped Systems,” Trans. ASME, J. Appl. Mech.

[CrossRef], 64 , pp. 601–605.

Pilkey, D. F., and Inman, D. J., 1997, “Iterative Approach to Viscous Damping Matrix Identification,” "*Proceedings of the 15th International Modal Analysis Conference (IMAC)*", Orlando, FL, February 1997, Vol. 2 .

Alvin, K. F., Peterson, L. D., and Park, K. C., 1997, “Extraction of Normal Modes and Full Modal Damping From Complex Modal Parameters,” AIAA J., 35 (7), pp. 1187–1194.

Adhikari, S., and Woodhouse, J., 2001, “Identification of Damping: Part 1, Viscous Damping,” J. Sound Vib.

[CrossRef], 243 (1), pp. 43–61.

Adhikari, S., and Woodhouse, J., 2001, “Identification of Damping: Part 2, Non-Viscous Damping,” J. Sound Vib.

[CrossRef], 243 (1), pp. 63–88.

Adhikari, S., and Woodhouse, J., 2002, “Identification of Damping: Part 3, Symmetry-Preserving Method,” J. Sound Vib., 251 (3), pp. 477–490.

Adhikari, S., and Woodhouse, J., 2002, “Identification of Damping: Part 4, Error Analysis,” J. Sound Vib., 251 (3), pp. 491–504.

Barbieri, N., de Souza, O. H., and Barbieri, R., 2004, “Dynamical Analysis of Transmission Line Cables. Part 2—Damping Estimation,” Mech. Syst. Signal Process., 18 (3), pp. 671–681.

Barbieri, N., Novak, P. R., and Barbieri, R., 2004, “Experimental Identification of Damping,” Int. J. Solids Struct., 41 (13), pp. 3585–3594.

Popov, A. A., and Geng, Z. M., 2005, “Modelling of Vibration Damping in Pneumatic Tyres,” Veh. Syst. Dyn., 43 , pp. 145–155.

Segalman, D. J., 2006, “Modelling Joint Friction in Structural Dynamics,” Struct. Control Health Monit., 13 (1), pp. 430–453.

Caravani, P., and Thomson, W. T., 1974, “Identification of Damping Coefficients in Multidimensional Linear Systems,” ASME Trans. J. Appl. Mech., 41 , pp. 379–382.

Fritzen, C.-P., 1986, “Identification of Mass, Damping and Stiffness Matrices of Mechanical Systems,” Trans. ASME, J. Vib., Acoust., Stress, Reliab. Des., 108 , pp. 9–16.

Mottershead, J. E., 1990, “Theory for the Estimation of Structural Vibration Parameters From Incomplete Data,” AIAA J., 28 (3), pp. 559–561.

Roemer, M. J., and Mook, D. J., 1992, “Mass, Stiffness and Damping Matrix Identification: An Integrated Approach,” Trans. ASME, J. Vib. Acoust.

[CrossRef], 114 , pp. 358–363.

Chen, S. Y., Ju, M. S., and Tsuei, Y. G., 1996, “Estimation of Mass Stiffness and Damping Matrices From Frequency Response Function,” Trans. ASME, J. Vib. Acoust.

[CrossRef], 118 , pp. 78–82.

Baruch, M., 1997, “Identification of the Damping Matrix,” TAE Technical Report No. 803, Technion, Israel, Faculty of Aerospace Engineering, Israel Institute of Technology, Haifa.

Adhikari, S., 2002, “Lancaster’s Method of Damping Identification Revisited,” Trans. ASME, J. Vib. Acoust.

[CrossRef], 124 (4), pp. 617–627.

Khalil, M., Adhikari, S., and Sarkar, A., 2007, “Linear System Identification Using Proper Orthogonal Decomposition,” Mech. Syst. Signal Process., 21 (8), pp. 3123–3145.

Phani, A. S., and Woodhouse, J., “Viscous Damping Identification in Linear Vibration,” J. Sound Vib., 303 , (3–5), pp. 475–500.

Imregun, M., and Ewins, D. J., 1995, “Complex Modes: Origin and Limits,” "*Proceedings of the 13th International Modal Analysis Conference (IMAC)*", Nashville, TN, February 1995.

Adhikari, S., 2004, “Optimal Complex Modes and an Index of Damping Non-Proportionality,” Mech. Syst. Signal Process., 18 (1), pp. 1–27.

Phani, A. S., 2003, “On the Necessary and Sufficient Conditions for the Existence of Classical Normal Modes in Damped Linear Dynamic Systems,” J. Sound Vib.

[CrossRef], 264 (3), pp. 741–745.

Bellman, R., 1960, "*Introduction to Matrix Analysis*", McGraw-Hill, New York.

Allemang, R. J., and Brown, D. L., 1982, “A Correlation Coefficient for Modal Vector Analysis,” "*Proceedings of the First International Modal Analysis Conference (IMAC)*", Orlando, FL.

Friswell, M. I., and Mottershead, J. E., 1995, "*Finite Element Model Updating in Structural Dynamics*", Kluwer Academic, The Netherlands.

Harville, D. A., 1998, "*Matrix Algebra From a Statistician’s Perspective*", Springer-Verlag, New York.

Ungar, E. E., 2000, “Damping by Viscoelastic Layers,” Appl. Mech. Rev., 53 (6), pp. R33–R38.

Géradin, M., and Rixen, D., 1997, "*Mechanical Vibrations*", 2nd ed., Wiley, New York.