1. Network Analysis and Feedback Amplifier Design;Bode,1945
2. Graphical analysis of control systems;Evans;Trans. AIEEE,1948
3. Spectral portraits of matrices and criteria of spectrum dichotomy;Godunov,1991
4. Spectral value sets: a graphical tool for robustness analysis;Hinrichsen,1992
5. An algorithm for the computation of the structured stability radius with applications;Hinrichsen;Automatica,1989