Zilhão, J. (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). Obtido de http://84.247.136.72/ojsletrasX/index.php/tae/article/view/9551