Roll Jakobsen, Peter, Erik Skovbjerg Rasmussen, Karen Dybkjær, and Jacob Kidmose. “Miocene Deposits at Silkeborg, Jylland, and Their Influence on Hydrology”. GEUS Bulletin 35 (July 15, 2016): 9–12. Accessed April 26, 2024. https://geusbulletin.org/index.php/geusb/article/view/4399.