Beznosikov, Vasiliy, and Evgeniy Lodygin. 2012. “Fraction-Group Humus Composition of Cryogenic Surface-Gley and Hydromorphic Soils of the Bol’shezemel’skaya Tundra”. Biological Communications, no. 1 (March):107–120. https://biocomm.spbu.ru/article/view/4808.