Tong, X., and Mrad, N., 2001, “Chaotic Motion of a Symmetric Gyro Subjected to Harmonic Base Excitation,” ASME J. Appl. Mech.

[CrossRef], 68 , pp. 681–684.

Ge, Z.-M., and Chen, H.-H., 1996, “Bifurcation and Chaos in Rate Gyro With Harmonic Excitation,” J. Sound Vib., 194 (1), pp. 107–117.

Ge, Z.-M., Chen, H.-K., and Chen, H.-H., 1996, “The Regular and Chaotic Motions of a Symmetric Heavy Gyroscope With Harmonic Excitation,” J. Sound Vib.

[CrossRef], 198 (2), pp. 131–147.

Chen, H.-K., 2002, “Chaos and Chaos Synchronization of a Symmetric Gyro With Linear-Plus-Cubic Damping,” J. Sound Vib., 255 (4), pp. 719–740.

Van Dooren, R., 2003, “Comments on Chaos and Chaos Synchronization of a Symmetric Gyro With Linear-Plus-Cubic Damping,” J. Sound Vib., 268 , pp. 632–634.

Leipnik, R. B., and Newton, T. A., 1981, “Double Strange Attractors in Rigid Body Motion With Linear Feedback Control,” Phys. Lett., 86A , pp. 63–67.

Pecora, L.-M., and Carroll, T. L., 1990, “Synchronization in Chaotic Systems,” Phys. Rev. Lett.

[CrossRef], 64 , pp. 821–824.

Lakshmanan, M., and Murali, K., 1996, "*Chaos in Nonlinear Oscillators: Controlling Synchronization*", World Scientific, Singapore.

Strogatz, S., 2000, "*Nonlinear Dynamics and Chaos*", Westview, Cambridge, MA.

Lei, Y., Xu, W., and Zheng, H., 2005, “Synchronization of Two Chaotic Nonlinear Gyros Using Active Control,” Phys. Lett. A, 343 , pp. 153–158.

Udwadia, F. E., and Kalaba, R. E., 1996, “Analytical Dynamics: A New Approach,” Cambridge University Press, Cambridge, England.

Hramov, A., and Koronovskii, A., 2005, “Generalized Synchronization: A Modified System Approach,” Phys. Rev. E

[CrossRef], 71 (6), P. 067201.

BoccalettiS., Kruths, J., Osipov, G., Valladares, D., and Zhou, C., 2002, “The Synchronization of Chaotic Systems,” Phys. Rep.

[CrossRef], 336 , pp. 1–101.

Pars, L. A., 1972, "*A Treatise on Analytical Dynamics*", Oxbow, Woodbridge, CT.

Udwadia, F. E., 2003, “A New Perspective on the Tracking Control of Nonlinear Structural and Mechanical Systems,” Proc. R. Soc. London, Ser. A, 459 , pp. 1783–1800.

Franklin, J., 1995, “Least-Squares Solution of Equations of Motion Under Inconsistent Constraints,” Linear Algebr. Appl., 222 , pp. 9–13.

Udwadia, F. E., and von Bremen, H., 2001, “An Efficient and Stable Approach for Computation of Lyapunov Characteristic Exponents of Continuous Dynamical Systems, Appl. Math. Comput., 121 , pp. 219–259.

Udwadia, F. E., 2000, “Fundamental Principles of Lagrangian Dynamics: Mechanical Systems With Non-Ideal, Holonomic, and Non-Holonomic Constraints,” J. Math. Anal. Appl.

[CrossRef], 252 , pp. 341–355.

Udwadia, F. E., and Kalaba, R. E., 1997, “An Alternative Proof of the Greville Formula,” J. Optim. Theory Appl., 94 (1), pp. 23–28.

Utkin, V., 1992, "*Sliding Modes in Control Optimization*", Springer-Verlag, Berlin.