Other, later, ancient histories of the war exist, although often in fragmentary or summary form. Modern historians usually take into account the writings of various Roman annalists, some contemporary; the Sicilian Greek Diodorus Siculus; the later Roman historians, Livy (who relied heavily on Polybius), Plutarch, Appian (whose account of the Third Punic War is especially valuable) and Dio Cassius. The classicist Adrian Goldsworthy states "Polybius' account is usually to be preferred when it differs with any of our other accounts". Other sources include coins, inscriptions, archaeological evidence and empirical evidence from reconstructions such as the trireme "Olympias".