1. Development of Non-metallic Deposits;Shline,1985
2. Fundamentals of metallurgical production;Babich;Metallurgy,1988
3. O.S. Gorfin, Machines and Equipment for Peat Processing: Textbook for Universities, M.: Nedra, 1990, p. 318.
4. S.E. Andreev, V.A. Perov, V.V. Zverevich, Crushing, Grinding and Screening of Minerals, M.: Nedra, 1980, p. 415.
5. E.E. Sergo, Crushing, Grinding and Screening of Minerals, M.: Nedra, 1985, p. 282.