A 2-Step Subspace Projection Approach for Generating Compact, Provably Passive, Reduced-Order Macromodels for Interconnect Circuits - Steinmair, Gernot; Troescher, Matthias; Stelzer, Andreas; Weigel, Robert (Proceedings of the Asia-Pacific Microwave Conference, 2002)
elib2cris::1512001600,steinmair2002