TY - JOUR AU - Oliva, Waldyr M. AU - Táboas, Plácido Z. TI - Existence of periodic orbits, set of global solutions and behavior near equilibrium for Volterra equations of retarded type. JO - Portugaliae mathematica PY - 1997 SP - 165 EP - 186 VL - 54 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PORMA_1997__54_2_47828/ LA - en ID - PORMA_1997__54_2_47828 ER -