Gehrke, Johan. “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 (januar 1, 1908). Set januar 21, 2026. https://tidsskrift.dk/geografisktidsskrift/article/view/49391.