Therkelsen, Jens, and Finn Surlyk. 2004. “The Fluviatile Bristol Elv Formation, a New Middle Jurassic Lithostratigraphic Unit from Traill Ø, North-East Greenland”. GEUS Bulletin 5 (November). Copenhagen, Denmark:19-29. https://doi.org/10.34194/geusb.v5.4801.