Bondam, Jan. “Petrography of a Group of Alkali-Trachytic Dyke Rocks from the Julianehaab District, South Greenland. A Contribution to the Alkali Feldspar Problem”. Meddelelser Om Grønland, vol. 135, no. 2, Mar. 2026, pp. 3-21, 2 plates., https://tidsskrift.dk/meddrgroenland/article/view/166801.