1. Reformirovanie zakonodatel’stva v sfere okhrany okruzhayushchei sredy Rossiiskoi Federatsii (Reformation of the Russian Federation Legislation on Environmental Protection), Report of the Minister of the RF Ministry of Nature and Ecology Yu.P. Trutnev at the State Council Presidium Session on Ecology, Elista, 2010.
2. Kalabin, G.V., Kulov, S.K., Titova, A.V., and Pikhlak, A.-T.A., Zemlya zhivaya (The Living Earth), Moscow: VNIIgeosistem, 2010.
3. Kokin, A.V., Assimilyatsionnyi potentsial biosfery (Assimilation Potential of Biosphere), Rostov-on-Don: SKAGS, 2005.
4. Kata-Pendis, A. and Pendis, Kh., Mikroelementy v pochvakh i rasteniyakh (Microelements in Soils and Plants), Moscow: Mir, 1989.
5. Lantieri, D., Potential Use of Satellite Remote Sensing for Land Degradation Assessment in Dry Lands, FAO, Rome, 2003.