1. Eastern Barents Sea Late Palaeozoic setting and potential source rocks;Alsgaard,1993
2. Carboniferous and Permian reefs of the Sverdrup Basin, Canadian arctic islands;Beauchamp,1993
3. The Upper Palaeozoic succession on the Finnmark platform, Barents Sea;Bugge;Norsk Geologisk Tidsskrift,1995
4. Gondwanan glaciations, cyclothems, continental positioning, and climate change;Crowell;American Journal of Science,1978
5. Carboniferous and Permian reefs in Canada and adjacent areas;Davies,1989