{"id":"003053048","type":"book","title":"Early Medieval ringforts and the social elite of the Polabian Slavs in the Tenth and first half of the Eleventh Century","publisher":"The Czech Academy of Sciences, Institute of Archaeology","publisher-place":"Brno","pages":"343-350","container-title":"Kouřil, Pavel, Moravian and Silesian strongholds of the tenth and eleventh centuries in the context of Central Europe / | ISSN: 9788075240101","author":[{"family":"Biermann","given":"Felix"}],"issued":{"raw":"2018"}}