Therkelsen, J. . and Surlyk, F. . (2004) “The fluviatile Bristol Elv Formation, a new Middle Jurassic lithostratigraphic unit from Traill Ø, North-East Greenland”, GEUS Bulletin. Copenhagen, Denmark, 5, pp. 19–29. doi: 10.34194/geusb.v5.4801.