Broutin, J. and J. Galtier. “Floras from red beds of the Permian Basin of Lodève (Southern France)”. Journal of Iberian Geology, vol. 34, vol. 34, no. 1, 2008, pp. 57-72, https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0808120057A.