Alsen, P. ., and S. . Piasecki. “Biostratigraphy of the Hareelv Formation (Upper Jurassic) in the Blokelv-1 Core, Jameson Land, Central East Greenland”. GEUS Bulletin, vol. 42, Dec. 2018, pp. 15-37, doi:10.34194/geusb.v42.4308.