REFERENCES
- COLMAN , B. D. , and MIZEL , V. J. , 1968 , Arch. Rational Mech. Anal. , 30 , 173 .
- DELFOUB , M. C. , and MTTTER , S. K. , 1972 , J. Diff. Eg. , 12 , 213 .
- HALE , J. K. , 1971 , Functional Differential Equations; Applied Mathematical Sciences, Vol. 3 ( New York Springer-Verlag ).
- LADDE , G. S. , 1975 , J. Math. Phys. , 16 , 894 ; 1976,Math. Biosci., 29, 309 .
- LAKSHMIKANTHAM , V. , and LEELA , S. , 1969 , Differential and Integral Inequalities Theory and Applications ,Vol. I and II ( New York Academic Press ).
- ROSEN , R. , 1970 , Dynamical System Theory in Biology ,Vol. 1 ( New York Wiley- Interscience ).
- SHENDGE , G. R. , 1974 , Acta. Math. Acad., Sci. Hungary , 25 , 21 .
- SLLJAK , D. D. , 1973 , 1.E.E.E. Trans. Systems, Man Cyber. , 3 , 415 ; 1975, Automatica, 11, 389 .
- SINHA , A. S. C , 1975 , Int. J. Systems Sci. , 6 , 49 ; 1978, Int. J. Control, 27, 571 .