References
- Kopeykina , T.B. and Mulartchik , V.V. 1974 . On observability and recognizability of systems with delay . Differential Uravnenia , 10 ( 8 ) : 933 – 936 .
- Olbrot , A.W. 1977 . A counterexample to observability of linear systems with time-invariant . IEEE Trans. Automat. Control , 22 ( 8 ) : 281 – 283 .
- Lee , E.B. and Olbrot , A.W. 1981 . Observability and related structural results for linear hereditary . J. Control , 34 ( 6 ) : 1061 – 1078 .
- Olbrot , A.W. 1978 . Stabilizability, detectability and spectrum assignment for linear autonomous . Trans. Automat. Control , 23 ( 6 ) : 887 – 890 .
- De la Sen , M. 1988 . Fundamental properties of linear control systems with after-effect. Part I: . Mathematical and Computer Modelling , 10 ( 7 ) : 473 – 489 . Ibid., Extensions including the discrete case, Ibid., Vol. 10, No. 7, pp. 491-502, 1988
- Burton , T.A. 1985 . “ Stability and periodic solutions of ordinary and functional differential equa- ” . New York : Academic Press .
- Zadeh , L.A. and Desoer , Ch.A. 1963 . “ Linear System Theory, The State Space Approach ” . newYork : McGraw-Hill .
- Bellman , R. 1970 . “ Methods of nonlinear analysis ” . Vol. I , New York : Academic Press .
- Franklin , G.R . and Powell , J.D. 1980 . “ Digital Control of Dynamic Systems, Reading MA ” . Addison-Wesley .
- Apostol , T.M. 1980 . “ Mathematical Analysis. Reading MA ” . Addison-Wesley .