Euzebio, Rodrigo Donizete [UNESP]Llibre, Jaume2015-03-182015-03-182014-09-01Discrete And Continuous Dynamical Systems. Springfield: Amer Inst Mathematical Sciences, v. 34, n. 9, p. 3455-3469, 2014.1078-0947http://hdl.handle.net/11449/117541By rescaling the variables, the parameters and the periodic function of the Vallis differential system we provide sufficient conditions for the existence of periodic solutions and we also characterize their kind of stability. The results are obtained using averaging theory.3455-3469engVallis systemperiodic solutionsEl Nino modelArtigo10.3934/dcds.2014.34.3455WOS:000333556300009Acesso restrito