REFERENCES
- BALAKRISHNAN , A. V. , and LIONS , J. L. , 1967 , J. Compt. Syst. Sci. , 1 , 391 .
- BECK , J. V. , 1970 a, J. bos. Engng , 92 , 215 .
- BECK , J. V. , 1970 b, Int. J. Heat Mass Transfer , 13 , 703 .
- CANNON , J. R. , 1968 , SIAM J. Numer, Anal. , 5 , 257 .
- CANNON , J. R. , and JONES , B. F. , JR. , 1963 , Int. J. Engng Sci. , 1 , 457 .
- DENN , M. M. , 1969 , Optimization by Variational Method ( New York McGraw-Hill ).
- FAIRMAN , F. W. , and SHEN , D. N. C. , 1970 , Int. J. Control , 11 , 929 .
- HWANG , M. , SEINFELD , J. H. , and GAVALAS , G. R. , 1971 , J. math. Analysis Applic. ( in press ).
- KUSHNER , A. J. , 1970 , J. SIAM Control , 8 , 346 .
- LAMONT , G. B. , and KUMAR , K. S. P. , 1971 , J. math. Analysis Applic. ( in press ).
- MEDITCK , J. S. , 1969 , Boeing Scientific Research Laboratory Report DI-82–0917 .
- PHILLIPSON , G. A. , 1971 , Identification of Distributed Systems ( New York American Elsevier ).
- SEINFELD , J. H. , 1969 , Chem. Engng Sci. , 24 , 75 .
- SEINFELD , J. H. , and CHEN , W. H. , 1971 , Chem. Engng. Sci. , 26 , 753 .
- SEINFELD , J. H. , GAVALAS , G. R. , and HWANG , M. , 1970 a, Joint Automatic Control Conference ( Georgia Institute of Technology , Atlanta , Georgia ).
- SEINFELD , J. H. , and HWANG , M. , 1970 b, Chem. Engng Sci. , 25 , 741 .
- THAU , P. E. , 1969 , J. bos. Engng, Trails. A.S.M.E., Series D91 , 1 , 73 .
- TZAFESTAS , S. G. , and NIGHTINGALE , J. M. , 1968 , Proc. Instn elect. Engrs , 115 , 1207 .
- TZAFESTAS , S. G. , and NIGHTINGALE , J. M. , 1969 a, Electronics Letts , 5 , 199 .
- TZAFESTAS , S. G. , and NIGHTINGALE , J. M. , 1969 b, Proc. Instn elect. Engrs , 116 , 1085 .
- † Communicated by Dr. A. T. Fuller