1. G. R. Duan and G. P. Liu, “Complete parametric approach for eigenstructure assignment in a class of second-order linear systems,” Automatica, vol. 38, no. 2, pp. 725–729, April 2002.
2. J. G. Lu, J. Xiao, and W. Chen, “Maximal perturbation bounds for robust a-stability of matrix second-order systems with one-parameter perturbations,” Automatica, vol. 48, no. 2, pp. 995–998, May 2012.
3. Z. Y. Qiu, Y. L. Jiang, and J. W. Yuan, “Interpolatory model order reduction method for second order systems,” Asian Journal of Control, vol. 20, no. 2, pp. 312–322, January 2018.
4. K. L. Xu, P. Yang, and Y. L. Jiang, “Structure-preserving model reduction of second-order systems by Krylov sub-space methods,” Journal of Applied Mathematics & Computing, vol. 58, no. 2, pp. 305–322, Octorber 2018.
5. T. Kailath, Linear Systems, Prentice-Hall, Englewood Cliffs, NJ, 1980.