Ineson, J. R.; Peel, J. S.; Willman, S.; Rugen, E. J.; Sønderholm, M.; Frykman, P. Lithostratigraphy of the Portfjeld Group (Ediacaran – Lowermost Cambrian) of North Greenland. GEUS Bulletin 2024, 57. https://doi.org/10.34194/geusb.v57.8375.