Wang, Wei et Sun, Jian Hua, On the Predator.Prey System with Holling-(n + 1) Functional Response, Acta mathematica Sinica. English series (Print) , 23(1), 2007, pp. 1-6
The qualitative properties of a predatorprey system with Holling-(n + 1) functional response and a fairly general growth rate are completely investigated. The necessary and sufficient condition to guarantee the uniqueness of limit cycles is given. Our work extends the previous relevant results in the reference.