Athanasios C. Antoulas Danny C. Sorensen Kyle A. Gallivan Paul Van Dooren Ananth Grama Christoph Hoffmann Ahmed H. Sameh Model Reduction of Large-Scale Dynamical Systems. 740-747 http://dx.doi.org/10.1007/978-3-540-24688-6_96 2004 conf/iccS/2004-3 International Conference on Computational Science db/conf/iccS/iccS2004-3.html#AntoulasSGDGHS04