Semyachkov, Aleksander Ivanovich, and Yuliya Olegovna Slavikovskaya. 2015. “The Features of Geo-Ecological Assessment Within the Geo-Eco-Socio-Economic Approach to the Development of Northern Territories”. Economy of Regions 11 (4):30-39. https://doi.org/10.17059/2015-4-3.