REFERENCES
- CHESTNUT , HAROLD , and MAYER , ROBERT W. , 1955 , Servomechanisms and Regulating System Design , Vol. II ( John Wiley & Sons ) .
- HAN , K. W. , and THALER , G. J. , 1961 , AIEE Trans. , 80 , 196 .
- LARSEN , THAL , 1955 , AIEE Trans. , 74 , 109 .
- OSTROVSKI , G. M. , 1961 , Proc. of the First International Federation of Automatic Control , Moscow , 1960 , Vol. I ( London: Butterworths ) , p. 520 .
- †Communicated by the Authors