%0 Journal Article %A Cavani, Mario %A Lara, Teodoro %A Romero, Sael %T Hopf bifurcation for simple food chain model with delay %J Electronic Journal of Differential Equations %D 2009 %V 2009 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a59/ %G en %F EJDE_2009__2009__a59