1. Fedorova, N.I., Mikhaylova, E.S., and Ismagilov, Z.R., Properties of Kuznets basin gas coal, Coke Chem., 2017, vol. 60, no. 7, pp. 261–266.
2. Eremin, I.V., Lebedev, V.V., and Taikarev, D.A., Petrografiya i fizicheskie svoistva uglei (Petrography and Physical Properties of Coals), Moscow: Nedra, 1980.
3. Taits, E.M. and Andreeva, I.A., Metody analiza i ispytaniya uglei (Methods of Analysis and Tests of Coals), Moscow: Nedra, 1983.
4. GOST (State Standard) R 55662-2013: Methods for the Petrographic Analysis of Coals. Part 3. Method of Determining Maceral Group Composition, Moscow: Standartinform, 2014.
5. GOST (State Standard) 9414.1-94: Methods for the Petrographic Analysis of Bituminous Coal and Anthracite. Part 1. Glossary of Terms, Moscow: Izd. Standartov, 1995.