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3. O. N. Bakhmet, “Peculiarities of soils of rocky landscapes in the Karelian coast of the White Sea,” Uch. Zap. Petrozavodsk. Gos. Univ., S-kh. Nauki., No. 6, 55–59 (2013).
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5. R. S. Vasilevich, “Major and trace element compositions of hummocky frozen peatlands in the forest–tundra of northeastern European Russia,” Geochem. Int. 56 (12), 1276–1288 (2018). https://doi.org/10.1134/S0016702918100129