{"id":"001064728","type":"book","title":"Ests, Slavs and Saxons: ethnic groups and political structures","publisher":"The Viking Ship Museum, Roskilde","publisher-place":"Roskilde","pages":"50-57","container-title":"Wulfstan's voyage : The Baltic Sea region in the early Viking Age as seen from shipboard","author":[{"family":"Lübke","given":"Christian"}],"issued":{"raw":"2009"}}