Nielsen, Eigil. “The Investigations of the Permian and Triassic Strata in the Neighbourhood of Eskimonæs As Well As Other Investigations Made by Eigil Nielsen”. Meddelelser Om Grønland, vol. 143, no. 2, Aug. 1955, pp. 475-90, https://tidsskrift.dk/meddrgroenland/article/view/165969.