Larsen, Nikolaj Krog, Kristian B.R Kristensen, Marie-Louise Siggaard-Andersen, Claus Heilmann-Clausen, and Kurt H Kjær. “X-Ray Fluorescence (XRF) Fingerprinting of Palaeogene Deposits in Denmark”. GEUS Bulletin 53 (March 10, 2023). Accessed April 19, 2024. https://geusbulletin.org/index.php/geusb/article/view/8330.