Stouge, S. ., Boyce, W. D. ., Christiansen, J. L. ., Harper, D. A. ., & Knight, I. . (2002). Lower–Middle Ordovician stratigraphy of North-East Greenland. Geology of Greenland Survey Bulletin, 191, 117–125. https://doi.org/10.34194/ggub.v191.5138