Alsen, Peter, and Stefan Piasecki. “Biostratigraphy of the Hareelv Formation (Upper Jurassic) in the Blokelv-1 Core, Jameson Land, Central East Greenland”. GEUS Bulletin 42 (December 28, 2018): 15–37. Accessed August 9, 2022. https://geusbulletin.org/index.php/geusb/article/view/4308.