{"id":"003023361","type":"article","title":"Mast-Step Coins among the Romans","publisher":"Blackwell Publishing Ltd.;  Nautical Archaeology Society","publisher-place":"New York","pages":"317-324","container-title":"The International Journal of Nautical Archaeology, 36 (2007","author":[{"family":"Carlson","given":"Deborah N."}],"issued":{"raw":"2007"}}