%0 Journal Article %A Oliva, Waldyr M. %A Táboas, Plácido Z. %T Existence of periodic orbits, set of global solutions and behavior near equilibrium for Volterra equations of retarded type. %J Portugaliae mathematica %D 1997 %P 165-186 %V 54 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1997__54_2_47828/ %G en %F PORMA_1997__54_2_47828