Knudsen, Christian, and Bodil W. Lauridsen. 2016. “Geochemistry of the Maastrichtian Rørdal Member, Jylland, Denmark: Ce Anomaly As a Palaeo-Redox Proxy”. GEUS Bulletin 35 (July). Copenhagen, Denmark:51-54. https://doi.org/10.34194/geusb.v35.4926.