1. A. C. Antoulas, Approximation of Large-scale Dynamical Systems, SIAM, Philadelphia, 2005.
2. C. Boess, N. K. Nichols and G. Bunse, “Model reduction for discrete unstable control systems using a balanced truncation approach,” https://www.reading.ac.uk/web/FILES/maths/Preprint_10_06_Nichols.pdfdate11/06/2019.
3. N. H. Cong, V. N. Kien, D. H. Du, and B. T. Thanh, “Researching model order reduction based on Schur analysis,” Proc. of IEEE Conference on Cybernetics and Intelligent Systems (CIS), pp. 60–65, 2013.
4. D. Casagrande, W. Krajewski, and U. Viaro, “On the asymptotic accuracy of reduced-order models,” International Journal of Control, Automation and Systems, October 2017, vol. 15, no. 5, pp. 2436–2442, 2017.
5. E. Malekshahi and S. -M. -A. Mohammadi, “The model order reduction using LS, RLS and MV estimation methods,” International Journal of Control, Automation and Systems, vol. 12, no. 3, pp. 572–581, 2014.