1. Design of Multivariable Control Systems Using the Inverse Nyquist Array;Rosenbrock;Proc. IRE,1969
2. Computer Aided Control System Design;Rosenbrock,1974
3. Characteristic Loci Techniques in Multi-variable System Design;Belletrutti;Proc. IEE,1971
4. The Characteristic Locus Design Method;MacFarlane;Automatica,1973
5. The Generalized Nyquist Stability Criterion and Multivariable Root Loci;MacFarlane;Int. J. Control,1977