H. Kombrink, J.S. Bridge, and E. Stouthamer. “The Alluvial Architecture of the Coevorden Field (Upper Carboniferous), the Netherlands”. Netherlands Journal of Geosciences 86 (April 1, 2007): 3 - 14. Accessed March 30, 2026. https://njgjournal.nl/index.php/njg/article/view/11758.