Knobloch, Erwin. «Comparisons Between the Cretaceous and Tertiary Floras of Central and Southwest Europe: A Commentary». Spanish Journal of Palaeontology 7, no. 2 (agosto 11, 2022): 161–165. Accedido enero 10, 2025. https://pasquin.uv.es/index.php/sjpalaeontology/article/view/25043.