5 Alan E. Astin, ‘Sources’, in CAH 2 8.3 and 4 (Cambridge 1970, 1982, 2005 repr.) 9-10, prioritises Polybius over Livy as the source text for this period; Silius is not mentioned, even in the section ‘literary texts’. F.W. Walbank’s powerful A Historical Commentary on Polybius, 3 vols, (Oxford 1957-1979) and lifetime of scholarship overshadow discussions of Polybius as a literary text; his comparisons of Polybius and Livy are usually discussed in terms of Livy’s use of sources. Also Tränkle, H., Livius und Polybios (Stuttgart 1977)Google Scholar; Moore, T.J., Artistry and Ideology: Livy’s Vocabulary of Virtue (Frankfurt 1989)Google Scholar; Hoyos, B. Dexter, ‘Generals and Annalists: Geographic and Chronological Obscurities in the Scipios’ Campaigns in Spain, 218-211 BC’, Klio 833 (2001) 68–92Google Scholar; id., Introduction, in Livy: Hannibal’s War Books 21-30 (trans. Yardley, J.C.)(Oxford 2006)Google Scholar; id., Hannibal: Rome’s Greatest Enemy (Exeter 2008) 5; ‘[Livy’s] historical and analytical skills were limited’; Briscoe, J., review of Walbank, A Historical Commentary on Polybius Volume iii, Commentary on Books xix-xl (Oxford 1979)Google ScholarCR 30.2 (1980) 189-91, esp. 190; A. Brian Bosworth, ‘Plus ça change: Ancient Historians and their Sources’, Classical Antiquity (2003) 167-98, esp. 168. Cf. Luce (n. 4) esp. 139-229. For discussion of Livy’s sources, see Walsh, Peter G., Livy, his Historical Aims and Methods (Cambridge 1963)Google Scholar esp. chap. 5; Mellor (n. 4) 67 calls Livy’s praise of Polybius at 30.45 a ‘unique accolade’. This does not mean that Livy prioritises Polybius over others; the citations above show that Livy more frequently acknowledges a preference for Polybius in the fourth decad. His praise of Polybius at 30.45.7 is balanced against his strongest criticism of Polybius at the end of the fourth decad - over Polybius’ dating for the death of Hannibal (39.52.1). Levene, D.S., Livy on the Hannibalic War (Oxford 2010)CrossRefGoogle Scholar 242: Livy turns the battle into a fundamental struggle between two existential enemies.