“Petroleum Potential and Depositional Environments of Middle Jurassic Coals and Non-Marine Deposits, Danish Central Graben, With Special Reference to the Søgne Basin”. Geology of Denmark Survey Bulletin 36 (August 18, 1998): 1–80. Accessed January 13, 2026. https://geusjournals.org/index.php/dgub/article/view/6204.