REFERENCES
- JURY , E. I. , 1964 , Theory and Application of Z-transform Methods ( U.S.A . John Wiley ).
- KINEN , E. , and TOU , J. , 1960 , A.I.E.E. Trans. , 78 , 386 .
- KUO , B. C. , 1963 , Analysis and Synthesis of Sample Data Control Systems ( U.S.A . Prentice Hall ).
- THALER , G. J. , and PASTEL , M. P. , 1962 , Analysis and Design of Non-linear Feedback Control Systems ( McGraw-Hill ), p. 111 .
- † Communicated by the Authors.