Römische Numismatik Martini R., Collezione Pangerl - Contromarche Imperiali Romane (Augustus-Vespasianus). The Pangerl Collection, Catalog and Commentary on the Countermarked Roman Imperial Coins. Nomismata Historisch-numismatische Forschungen 6. Mailand 2003. 286 Seiten, 19 Tafeln. Gebunden. Erhaltung II
Martini R., Collezione Pangerl - Contromarche imperiali novels (Augustus Vespasianus). The Pangerl Collection, Catalog and Commentary on the Countermarked novel imperial Coins. Nomismata historic numismatic researches 6. Milan 2003.286 sides, 19 boards. Bound. Condition II