Schovsbo, Niels H., Arne T. Nielsen, and Mikael Erlström. 2016. “Middle–Upper Ordovician and Silurian Stratigraphy and Basin Development in Southernmost Scandinavia”. GEUS Bulletin 35 (July). Copenhagen, Denmark:39-42. https://doi.org/10.34194/geusb.v35.4907.