Villa, Elisa, y Adriaan C. van Ginkel. «First Record of Gzhelian Fusulinaceans from the Carboniferous of Northern Spain». Spanish Journal of Palaeontology 14, no. 3 (febrero 27, 2022): 205–216. Accedido febrero 22, 2025. https://pasquin.uv.es/index.php/sjpalaeontology/article/view/23963.