{"id":"000549243","type":"article","title":"The age of the Côa valley (Portugal) rock-art. Validation of archaeological dating to the palaeolithic and refutation of scientific dating to historic or proto-historic times","pages":"883-901","container-title":"Antiquity, 69.1995","author":[{"family":"Zilhão","given":"João."}],"issued":{"raw":"1995"}}