Upton, B. G. J. (1964) “The geology of Tugtutôq and neighbouring islands, South Greenland. Part III: Olivine gabbros, syeno-gabbros and anorthosites”, Meddelelser om Grønland, 169(3), pp. 1–47. Available at: https://tidsskrift.dk/meddrgroenland/article/view/160424 (Accessed: 28 December 2025).