Símonarson, Leifur A., et al. “Molluscan Palaeontology of the Pliocene-Pleistocene Kap København Formation, North Greenland”. Meddelelser Om Grønland. Geoscience, vol. 36, Feb. 1998, p. 103 pp., doi:10.7146/moggeosci.v36i.140966.