1. V. D. Aleksandrova, “Study of changes in vegetation cover,” in Field Geobotany (Nauka, Moscow–Leningrad, 1964), Vol. 3, pp. 300–447 [in Russian].
2. B. P. Alisov, Climate of the USSR (Mosk. Gos. Univ., Moscow, 1956) [in Russian].
3. Atlas of the Komi Republic on Climate and Hydrology (Drofa, Moscow, 1997).
4. Atlas of the Komi Republic (Feoriya, Moscow, 2011).
5. K. S. Bobkova, Biological Productivity of Coniferous Forests in the European Northeast (Nauka, Leningrad, 1987) [in Russian].