Article Contents
Article Contents

# A priori bounds and periodic solutions for a class of planar systems with applications to Lotka-Volterra equations

• The existence of periodic solutions for some planar systems is investigated. Applications are given to positive solutions for a class of Kolmogorov systems generalizing a predator - prey model for the dynamics of two species in a periodic environment.
Mathematics Subject Classification: 34C25, 92A17.

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