Michelsen, Olaf, and Lars Henrik Jensen. “Well Records on the Phanerozoic Stratigraphy in the Fennoscandian Border Zone, Denmark. Hans-1, Sæby-1, and Terne 1 Wells”. Danmarks Geologiske Undersøgelse Serie A 29 (October 31, 1991): 1–37. Accessed April 25, 2024. https://geusjournals.org/index.php/seriea/article/view/7049.