1.
Berry W, Boucot A, Dawes P, Peel J. Late Silurian and early Devonian graptolites from North Greenland. rapggu [Internet]. 1974 Dec. 31 [cited 2024 Jul. 3];65:11-3. Available from: https://geusjournals.org/index.php/rapggu/article/view/7376