1. Insensitivity and Parametric Invariance in Linear Systems;Guardabassi,1971
2. Insensitivity of Linear Systems;Guardabassi,1971
3. A note on controllability;Tomovic,1968
4. Controllability and sensitivity;Sarma;IEEE Trans. Aut. Control,1969
5. Signal-insensitivity, controllability and observability in linear systems;Guardabassi;IEEE Trans. Aut. Control,1971