{"id":"001045150","type":"book","title":"Patterns of settlement and defence at the proto-town of Birka, Lake Mälar, eastern Sweden","publisher":"The Boydell Press","publisher-place":"Woodbridge","pages":"153-175","container-title":"The Scandinavians from the Vendel period to the tenth century : An ethnographic perspective","author":[{"family":"Holmquist Olausson","given":"Lena."}],"issued":{"raw":"2002"}}