Henriques, Maria Helena, y Rui Pena Dos Reis. «Improving Geoconservation of the Palaeontological Heritage through a Semiotic Vision». Spanish Journal of Palaeontology 34, no. 1 (julio 20, 2019): 95–102. Accedido enero 10, 2025. https://pasquin.uv.es/index.php/sjpalaeontology/article/view/15248.