{"id":"001064747","type":"book","title":"Piracy and naval organisation in the Baltic Sea in the 9th century: some security considerations concerning Wulfstan's voyage","publisher":"The Viking Ship Museum, Roskilde","publisher-place":"Roskilde","pages":"343-363","container-title":"Wulfstan's voyage : The Baltic Sea region in the early Viking Age as seen from shipboard","author":[{"family":"Bill","given":"Jan"}],"issued":{"raw":"2009"}}