REFERENCES
- AUTH , L. V. , 1964 , I.E.E.E. Trans. Circuit Theory , 11 , 82 .
- FOSTER , R. M. , 1963 , I.E.E.E. Trans. Circuit Theory , 10 , 527 .
- KALMAN , R. E. , 1962 , Proc. natn. Acad. Sci., Wash ., 48 , 596 .
- LADENHEIM , E. L. , 1964 , I.E.E.E. Trans. Circuit Theory , 11 , 88 .
- MCMILLAN , B. , 1952 , Bell Syst. tech. J. , 31 , 217 , 541 .
- MAYEDA , W. , 1972 , Graph Theory ( Wiley - Interacience ).
- ROSENBROCK , H. H. , 1970 , State-space and Multivariate Theory ( Nelson-Wiley ) ; 1974, Int. J. Control, 19, 323 .
- ROSENBROCK , H. H. , and PUGH , A. C. , 1974 , Int. J. Control , 19 , 845 .
- SESHU , S. , 1959 , I.R.E. Trans. Circuit Theory , 6 , 345 .
- SESHU , S. , and REED , H. B. , 1961 , Linear Graphs and Electrical Networks ( Addison-Wesley ).