D.P. Henige, The Chronology of Oral Tradition (Oxford, 1974); J. Vansina, Oral Tradition as History (London, 1985); O. Murray, “Herodotus and Oral History,” in H. Sancisi-Weerdenburg and A. Kuhrt, eds., Achaemenid History II: The Greek Sources (Leiden, 1987), pp. 93–115; D.D. Fehling, Herodotus and His Sources (Leeds, 1989); W. Burkert, “Lydia Between East and West or How to Date the Trojan War: A Study in Herodotus,” in J.B. Carter and S.P. Morris, eds., The Ages of Homer, A Tribute to E.T. Vermeule (Austin, 1995), pp. 139–148.