E. Barrón, Y. Sánchez-moya, and A. Sopeña, “New palynological and isotopic data for the Triassic of the western Cantabrian Mountains (Spain)”, JIGE, vol. 35, no. 1, pp. 35–45, Mar. 2009, Accessed: Nov. 21, 2024. Available: https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0909120035A