*The text is written in November 2008 for the **http://groups.google.com/group/mor4ansys** group.*

In the TCAD Newsletter I have found an interesting reference

R. Ionutiu, J. Rommes, A. Antoulas: “Passivity preserving model reduction using dominant spectral zero interpolation”, IEEE Transactions on COMPUTER-AIDED DESIGN of Integrated Circuits and System, 2008, vol. 27, N 12, pp. 2250-2263

http://dx.doi.org/10.1109/TCAD.2008.2006160

It is a new model reduction method that I have not seen before. The paper is very logic and gives a good insight on the algorithms. The examples presented are very impressive. I should confess that I have not understood yet how it functions, well, it will take some time.

**Some related links:**

Site of Roxana Ionutiu

http://r.ionutiu.googlepages.com/home

Hung Dinh Nong, Passivity Preserving Model Reduction via Interpolation of Spectral Zeros: Selection Criteria and Implementation

http://www.caam.rice.edu/caam/trs/2007/TR07-11.pdf

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