@article{articlec389a2a3,
title   = {A set of global bounded solutions for a Volterra system of retarded equations on 'R pot. 3 ind. +'},
author = {Oliva, Waldyr Muniz and Santos, Jair Silvério dos and Taboas, Placido Zoega},
year = {2000},
doi = {10.1007/PL00001425},
journal   = {Nonlinear Differential Equations and Applications}
}