1. E.W. Bai, Adaptive quantification of model uncertainties by rational approximation, IEEE Trans. on Automat. Contr., Vol. 36, pp. 441–453, 1991.
2. E.W. Bai and S. Raman, Adaptive quantification of model uncertainties for possibly unstable systems, Amer. Contr. Conf., pp. 1204–1209, 1991.
3. K. Glover, J. Lam and J.R. Partington, Rational approximation of a class of infinite dimensional systems, to be published.
4. G.C. Goodwin and M.E. Salgado, A stochastic embedding approach for quantifying uncertainty in the estimation of restricted complexity model, Int. J. ACSP, Vol.3, pp. 333–356, 1989.
5. G.Gu, P.P. Khargonekar and E.B. Lee, Approximation of infinite dimensional systems, IEEE Trans. on Automat. Contr., pp. 610–618, 1989.