1. Stability and Complexity in Model Ecosystems;May,1973
2. Periodic solutions of single-species models with periodic delay;Freedman;SIAM J. Math. Anal.,1992
3. Stability and Oscillations in Delay Differential Equations of Population Dynamics;Golpalsamy,1992
4. Delay Differential Equations with Applications in Population Dynamics;Kuang,1993
5. Global attractivity in nonautonomous logistic equations with delay;Lisena;Nonlinear Anal. Real World Appl.,2008