Gehrke, J. (1908) “Fridtjof Nansen: The Oceanography of the North Polar Basin. The Norwegian North Polar Expedition 1893—1896. Scientific Results Volume III No. IX. Fridtjof Nansen: On Hydrometers and the Surface Tension Of Liquids. The Norwegian North Polar Expedition 1893—1896. Scientific Results Volume III No. X”., Geografisk Tidsskrift, 19. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/49391 (Set: 21 januar 2026).