http://www.saber.ula.ve/handle/123456789/30317 2008 2026-05-02T02:28:05Z http://www.saber.ula.ve/handle/123456789/30318 A lemma on evolution operators and applications to parabolic-delay equations Carrasco, Alexander; Leiva A., Hugo Antonio 2010-01-25T22:27:44Z