1. Arinushkina, E.V., 1970. Manual for Chemical Analysis of Soils. Moscow University Press, Moscow, 487 pp. (in Russian).
2. The use of the aridity index to assess climate change effect on annual runoff;Arora;J. Hydrol.,2002
3. Budyko, M.I., 1977. Global Ecology. Mysl, Moscow, 327 pp. (in Russian).
4. Byzova, Yu.B., Uvarov, A.V., Gubina, V.G., Zalesskaya, N.T., Zakharov, A.A., Petrova, A.D., Suvorov, A.A., Vorobyeva, E.G., 1986. Soil invertebrates of White Sea Islands of Kandalaksha Reserve. Nauka, Moscow, 312 pp. (in Russian).
5. Dunger, W., 1974. Tiere im Boden. A. Ziemsen Verlag, Wittenberg, 265 pp.