{"id":"000997365","type":"book","title":"Norwegian medieval castles: building on the edge of Europe","publisher":"Centre de Recherche Archéologique Médiévales","publisher-place":"Caen","pages":"65-74","container-title":"Château Gaillard. 18. Études de castellologie médiévale. Actes du Colloque International tenu à Gilleleje (Danemark), 24-30 août 1996","author":[{"family":"Ekroll","given":"Øsytein"}],"issued":{"raw":"1998"}}