References
- Albrecht , F. , Gatzke , H. , Haddad , A. and Wax , N. 1974 . The dynamics of two interacting populations . J. Math. Anal. Appl. , 40 : 658 – 670 .
- Butler , G. , Freedman , H.I. and Waltman , P. 1986 . Uniformly persistent systems . Proc. A.M.S. , 96 : 425 – 430 .
- Cushing , J.M. 1977 . “ Integro ‐ diflerential Equations and Delay Models in Population ” . In Lect. Notes in Biomath. Vol. 20 , New York : Springer ‐ Verlag, .
- Hale , J. k. and Waltlnan , P. 1989 . Persistence in infinite ‐ dimensional systems, . SIAM J . Math. Anal. , 20 : 388 – 395 .
- Hastings , H. 1978 . Global stability of two species systems . J . Math. Biol. , 5 : 399 – 403 .
- Kolmogorov , A.N. 1936 . Sulla teoria di Volterra delle lofta per l'esidenm, . Giomale dell' , 7 : 74 – 80 .
- Kuang , Y. and Smith , H.L. in press . Global stability in diflusive dclay Lotka-Volterra systems .
- Rescigno , A. and Richardson , I. W. 1967 . The struggle for life I: Two species., . Bull. Math. Biophys. , 29 : 377 – 388 .
- Wendi , W. and Zhien , Ma . 1991 . Harmless delays for uniform persistence . J. Math. Anal. Appl. , 158 : 256 – 268 .