Periodic Time-Dependent Predator-Prey Systems

Coppel W. A., 1965, Stability and asymptotic behavior of differential equations

10.1016/0022-247X(77)90014-2

10.1016/0025-5564(76)90046-8

Halanay A., 1966, Differential equations: Stability, oscillations, time lags

Krasnosel'skii M. A., 1964, Topological methods in the theory of nonlinear integral equations

10.1016/0025-5564(74)90066-2

10.1016/0022-1236(71)90030-9

10.1070/rm1962v017n02ABEH001127

10.2307/1929888