Putkonen , Jaakko. “Soil Thermal Processes and Heat Transfer Processes Near Ny-Ålesund, Northwestern Spitsbergen, Svalbard”. Polar Research 17, no. 2 (January 12, 1998): 165-179. Accessed April 6, 2026. https://polarresearch.net/index.php/polar/article/view/2273.