Schack Pedersen, Stig A., Leif Aabo Rasmussen, and Johnny Fredericia. “Kortbladsbeskrivelse Til Geologisk Kort over Danmark, 1:50 000, Sakskøbing 1411 I Og 1412 II syd​”. Geological Survey of Denmark and Greenland Map Series 6 (July 15, 2015): 1–42. Accessed July 3, 2024. https://geusjournals.org/index.php/geusm/article/view/6446.