{"id":"001047739","type":"book","title":"Fortress and frontier at the end of the Middle Age","publisher":"Folio-Verlag","publisher-place":"Hertingen","pages":"102-107","container-title":"Centre, region, periphery. (2) Medieval Europe Basel 2002. 2. Sections 4 and 5. [3rd International Conference of Medieval and Later Archaeology. Preprinted papers","author":[{"family":"Eiroa Rodríguez","given":"Jorge A."}],"issued":{"raw":"2002"}}