↑ Martinsen, O. J. et al. (1999) "Cenozoic development of the Norwegian margin 60–64N: sequences and sedimentary response to variable basin physiography and tectonic setting" pp. 293–304 In Fleet, A. J. and Boldy, S. A. R. (editors) (1999) Petroleum Geology of Northwest Europe Geological Society, London, page 295, ISBN 978-1-86239-039-3
↑ Kearey, Philip (2001). Dictionary of Geology (2nd ed.) London, New York, etc.: Penguin Reference, London, p. 123. ISBN 978-0-14-051494-0.
