{"id":"001449450","type":"article","title":"Die mittelalterlichen Burgen »Versfleth« und »Witteburg«","publisher":"Staatsarchiv Bremen","publisher-place":"Bremen","pages":"25-45","container-title":"Bremisches Jahrbuch, 94 (2015","author":[{"family":"Trüper","given":"Hans Georg"}],"issued":{"raw":"2015"}}