Jordá Cerdá, F. “Algunas Consideraciones Sobre Los Problemas Del Arte Rupestre Del área Centroccidental Lusoespañola”. Portugalia : Journal Fo Archaeology of the Deparment of Heritage Studies of the Faculty of Arts and Humanities of the Universitu of Porto, vol. 4, Oct. 2018, https://ojstest.xyz/ojsletras/index.php/Port/article/view/4996.