Chen, Ting; Wei, Fengying Permanence of a predator-prey model with stage structure and infinite delay. (Chinese. English summary) Zbl 1236.92058 J. Shangqiu Teach. Coll. 26, No. 3, 6-10 (2010). Summary: A predator-prey system with stage structured and infinite delay is presented. Based on the comparison theorem, some sufficient conditions are derived for permanence of the system and non-permanence of the predators. MSC: 92D40 Ecology 34K60 Qualitative investigation and simulation of models involving functional-differential equations 34K20 Stability theory of functional-differential equations PDFBibTeX XMLCite \textit{T. Chen} and \textit{F. Wei}, J. Shangqiu Teach. Coll. 26, No. 3, 6--10 (2010; Zbl 1236.92058)