1. USC E.E. Report EECG-0785–1;RY Chiang,1986
2. M. G. Safonov, E. Jonckheere, M. Verma, and D.J.N. Limebeer, “Synthesis of Positive Real Multivariable Feedback Systems,” to appear Int. J. Control.
3. J. C. Doyle, “Advances in Multivariable Control,” ONR/Honeywell Workshop, Minneapolis, MN, October 1984,
4. J. C. Doyle, “Synthesis of Robust Controllers and Filters,” Proc. IEEE Conf. on Decision and Control, San Antonio, TX, December 1985.
5. G. Zames, “Feedback and Optimal Sensitivity: Model Reference Transformations, Multiplicative Semi norms, and Approximate Inverses,” IEEE Trans. on Automatic Control, Vol. AC-26, No, 2, pp. 301–320, April 1981.