{"id":"001531081","type":"article","title":"The northern fleets in the Principate","publisher":"Archaeopress Publishing Ltd.","publisher-place":"Oxford","pages":"691-695","container-title":"Roman frontier studies 2009: proceedings of the XXI International Congress of Roman Frontier Studies (Limes Congress) held at Newcastle-upon-Tyne in August 2009","author":[{"family":"Rummel","given":"Christoph"}],"issued":{"raw":"2017"}}