{"id":"001064733","type":"book","title":"Viking-Age sailing routes of the western Baltic Sea - a matter of safety","publisher":"The Viking Ship Museum, Roskilde","publisher-place":"Roskilde","pages":"135-144","container-title":"Wulfstan's voyage : The Baltic Sea region in the early Viking Age as seen from shipboard","author":[{"family":"Ulriksen","given":"Jens"}],"issued":{"raw":"2009"}}