1. Russian Federal Law on the Protection of Competition, 2006, no. 135-F3.
2. Analysis of the State of Competition in the Coking-Coal Market, http://www.fas.gov.ru/competition/goods/analisys/a_4851.shtml
3. Ruling 1-10/51-08, Pis’mo FAS Rossii, 2008, no. AG/20956.
4. Epshtein, S.A., Suprunenko, O.I., Rzhevskaya, S.V., and Shirochin, D.L., Classification and Coding to Ensure Coal Quality, Ugol, 2009, no. 1, pp. 48–50.
5. Note on the Article, Comparative Analysis of the Technological Value of Coal Used for Blast-Furnace Coke Production in Russia, Eastern Coal-Chemistry Institute, Yekaterinburg.