Mayoral, E.J. y Wagner, R. (2007) «The Early Permian of Valdeviar in Sevilla province, SW Spain: basin history and climatic/palaeogeographic implications», Journal of Iberian Geology, 33(1), pp. 93–124. Disponible en: https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0707120093A (Accedido: 25 julio 2026).