1. On the forgeries of public money;Akerman;Numismatic Chronicle,1843
2. The Elder Pliny's Chapters on Chemical Subjects;Bailey,1929
3. Die gefütterten Münzen aus der Zeit der Römischen Republik;Bahrfeldt;Numismatische Zeitschrift,1884
4. The Chalfont Hoard and other Roman Coin Hoards;Bland,1992
5. BMC (1923ff) Coins of The Roman Empire in The British Museum, 6 vols., British Museum, London