{"id":"001227446","type":"book","title":"Ringwall und Macht. Über die Burgen des 9./10. Jh. am Teltow und im Berliner Raum","publisher-place":"Wrocław","pages":"59-83","container-title":"Przegląd Archeologiczny, 49 (2001","author":[{"family":"Biermann","given":"Felix."}],"issued":{"raw":"2001"}}