Balstrøm, T. (1989) “North Sea oil and gas reservoirs: proceedings of the North Sea oil and gas reservoirs seminar organized and hosted by the Norwegian Institute of technology (NTH) in Trondheim, December 2-4, 1985. Ed. by J. Klemme et al”., Geografisk Tidsskrift, 89. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/44714 (Set: 5 december 2025).