Sheldon, E.; Morigi, C.; Møller, S. D. Calcareous Nannofossil and Foraminifer Biostratigraphy of the Campanian–Maastrichtian Chalk of the Femern Bælt (Denmark–Germany). GEUS Bulletin 2014, 31, 31-34. https://doi.org/10.34194/geusb.v31.4647.