{"id":"000989817","type":"book","title":"Hammershus on Bornholm, or who owned the archbishops castle?","publisher":"Centre de Recherches Archéologiques Médiévales","publisher-place":"Caen","pages":"145-149","container-title":"Château Gaillard. 17. Études de Castellologie Médiévale. Actes du Colloque International tenu à Abergavenny, Wales, 29 août-3 septembre 1994","author":[{"family":"Olsen","given":"Rikke Agnete"}],"issued":{"raw":"1996"}}