{"id":"001070739","type":"book","title":"Befestigungsanlagen der Duisburger Pfalz und Stadt im Mittelalter","publisher":"Schmidt-Römhild","publisher-place":"Lübeck","pages":"329-341","container-title":"Lübecker Kolloquium zur Stadtarchäologie im Hanseraum. 7. Die Befestigungen","author":[{"family":"Herrmann","given":"Volker"}],"issued":{"raw":"2010"}}