1. Antsaklis, P.J., Michael, A.N.: Linear Systems. McGraw-Hill, New York (1997)
2. Lecture Notes in Control and Information Sciences;J.D. Aplevich,1991
3. Basile, G., Marro, G.: Controlled and Conditioned Invariants in Linear Systems. Prentice-Hall, Englewood Cliffs (1992)
4. Brockett, R.W., Byrnes, C.I.: Multivariable Nyquist Criterion, Root Loci and Pole Placement: A geometric viewpoint. IEEE Trans. Aut. Control 26, 271–283 (1981)
5. Brunovsky, P.: A classification of linear controllable systems. Kybernetica 3, 173–187 (1970)