{"id":"000109577","type":"article","title":"Las fortificaciones medievales del Vallès (siglos IX-XIII)","publisher":"Barcelona Universitat","pages":"23-49","container-title":"Acta historica et archaeologica mediaevalia, 23/24.2002/03","author":[{"family":"Farías Zurita","given":"Víctor."}],"issued":{"raw":"2003"}}