After publication of On Computing the Complex Passivity Radius
in CDC-ECC 2005, we discovered that we had overlooked two important
Many of the results in our paper first appeared in the references listed above.
- T-S Hu and L Qiu, Complex and Real Performance Radii and
their Computation, International Journal of Robust and Nonlinear
Control 7, p.187-209, 1997
- T-S Hu and L Qiu, On Structured Perturbation of Hermitian Matrices,
Linear Algebra Appl. 275-276, pp.287-314, 1998.