Zilhão, João. 2020. «The Stylistically Paleolithic Petroglyphs of the Côa Valley (Portugal) Are of Paleolithic Age. A Refutation of Their “direct Dating” to Recent Times». Trabalhos De Antropologia E Etnologia 35 (4). http://84.247.136.72/ojsletrasX/index.php/tae/article/view/9551.