Parthasarathy, R.John, S.2020-03-312020-03-311981Electronics Letters, 1981, Vol.17, 21, pp.792-793https://idr.nitk.ac.in/handle/123456789/10163This letter surveys the recently published methods for deriving stable reduced-order models and justifies how sophisticated techniques had to be evolved to meet different problems which arise in the reduction of high-order systems. 1981, The Institution of Electrical Engineers. All rights reserved.Article