Zilhão, João. «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, no. 4 (Outubro 27, 2020). Acedido Agosto 1, 2025. https://ojstest.xyz/ojsletrasX/index.php/tae/article/view/9551.