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Periodicity in a “food-limited” population model with toxicants and time delays. (English) Zbl 1025.34070
The paper is devoted to prove the existence of a positive periodic solution to a “food-limited” population model with periodic coefficients and time delay. The proof of the main result is based on degree theory.
Reviewer: Eduardo Liz (Vigo)

MSC:
34K13 Periodic solutions to functional-differential equations
92D25 Population dynamics (general)
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