Christiansen F, Buchardt B, Jensenius J, Jepsen H, Nøhr-Hansen H, Thomsen E, Østfeldt P. Chapter 7: Bitumen occurrences. bullggu [Internet]. 1989 Jan. 1 [cited 2024 Jul. 3];158:61-72. Available from: https://geusjournals.org/index.php/bullggu/article/view/6706