%0 Journal Article %A Papini, Duccio %A Zanolin, Fabio %T Periodic points and chaotic-like dynamics of planar maps associated to nonlinear Hill's equations with indefinite weight. %J Georgian Mathematical Journal %D 2002 %P 339-366 %V 9 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/GMJ_2002__9_2_50131/ %G en %F GMJ_2002__9_2_50131