Dam, Gregers, Henrik Nøhr-Hansen, Flemming G. Christiansen, Jørgen A. Bojesen-Koefoed, and Troels Laier. “The Oldest Marine Cretaceous Sediments in West Greenland (Umiivik-1 Borehole) – Record of the Cenomanian–Turonian Anoxic Event?”. Geology of Greenland Survey Bulletin 180 (December 31, 1998): 128–137. Accessed May 5, 2024. https://geusjournals.org/index.php/ggub/article/view/6508.