Key points are not available for this paper at this time.
Marten Scheffer, Sergio Rinaldi, Yuri A. Kuznetsov, Egbert H. van Nes, Seasonal Dynamics of Daphnia and Algae Explained as a Periodically Forced Predator-Prey System, Oikos, Vol. 80, No. 3 (Dec., 1997), pp. 519-532
Scheffer et al. (Mon,) studied this question.