A. Castagnotto, C.A. Beattie, and S. Gugercin. Interpolatory methods for H_infinity model reduction of multi-input/multi-output systems. Accepted to appear in Model Reduction of Parametrized Systems III, Modeling, Simulation & Applications (MS&A) Series, Springer, 2016. Available as arXiv:1610.01039.
C.A. Beattie and S. Gugercin. Model Reduction by Rational Interpolation. Accepted to appear in P. Benner, A. Cohen, M. Ohlberger, and K. Willcox (eds.), Model Reduction and Approximation: Theory and Algorithms, SIAM, Philadelphia, PA, 2016.
S. Gugercin and J.-R. Li. Smith-type methods for balanced truncation of large-sparse systems. Dimension Reduction of Large-scale Systems, P. Benner, G.H. Golub, V.L. Mehrman and D.C. Sorensen editors, Springer-Verlag, Lecture Notes in Computational Science and Engineering, Vol. 45 (ISBN 3-540-24545-6), Berlin/Heidelberg, 2005. (Copyright Springer, 2005)