%0 Journal Article %A Amster, Pablo %A Balderrama, Rocio %A Idels, Lev %T Existence of periodic solutions in the modified wheldon model of CML %J Electronic journal of differential equations %D 2013 %V 2013 %U http://geodesic.mathdoc.fr/item/EJDE_2013__2013__a145/ %G en %F EJDE_2013__2013__a145