Rasmussen, Leif Banke. “Some Geological Results from the First Five Danish Exploration Wells in the North Sea. Dansk Nordsø A-1, A-2, B-1, C-1, and D-1”. Danmarks Geologiske Undersøgelse III. Række 42 (October 15, 1974): 1–46. Accessed May 7, 2024. https://geusjournals.org/index.php/raekke3/article/view/6947.