1. Lapidus A. L., Shpirt M.Ya., Malinovskaya Y.A., Chemistry of Solid Fuels 6 (2017)
2. Strizhakova Y.A., Usova T.V., Kozlov A.M., Oil refining and petrochemistry 8 (2010)
3. Lapidus A.L., Beilina N.Y., Khudyakov D.S., Chemistry of solid fuels 2 (2018)
4. Strizhakova Y.A., Nedra (2008)
5. Bycheev V.I., Ten V.N., Mining Bulletin of Uzbekistan 1 (2006)