T. Utescher, V. Mosbrugger, and A.R. Ashraf. “Facies and Paleogeography of the Tertiary of the Lower Rhine Basin - Sedimentary Versus Climatic Control”. Netherlands Journal of Geosciences 81 (August 1, 2002): 185-191. Accessed April 2, 2026. https://njgjournal.nl/index.php/njg/article/view/11388.