Rasmussen, Erik S., and Jens Bruun-Petersen. “Distribution and Grain Size of Sand in the Miocene Wave-Dominated Billund Delta, Denmark”. GEUS Bulletin 20 (July 7, 2010): 23–26. Accessed April 26, 2024. https://geusbulletin.org/index.php/geusb/article/view/4891.