1. Gosudarstvennyi doklad “O sostoyanii i ob okhrane okruzhayushchei sredy Rossiiskoi Federatsii v 2017 godu” (The Governmental Report “On the State and Protection of Environment in Russian Federation in 2017”), Moscow: Kadastr, 2018, pp. 87–112.
2. Report on the state and protection of environment in Kemerovo oblast in 2018. http://kuzbasseco.ru/wp-content/uploads/2019/02/Doclad_2018.pdf
3. Environmental newsletter of the Republic of Kazakhstan. https://kazhydromet.kz/ru/bulleten/okrsreda?year=2018.
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5. Fedorova, N.I., Dudnikova, Yu.N., Zykov, I.Yu., Kozlov, A.P., and Ismagilov, Z.R., Influence of the demineralization of naturally oxidized coal on sorbent texture, Coke Chem., 2018, vol. 61, no. 8, pp. 297–300.