1. Slobodskoi, S.A. and Sklyar, M.G., The dielectric properties of coals, Khim. Tverd. Topliva, 1970, no. 5, pp. 53–58.
2. Slobodskoi, S.A., Application of electrothermy in coal processing, Koks Khim., 1990, no. 6, pp. 14–16.
3. Ershova, V.A., Elektrotermicheskie protsessy khimicheskoi tekhnologii (Electrothermal Processes in Chemical Technology), Leningrad: Khimiya, 1984.
4. Slobodskoi, S.A. and Kryukovskii, A.I., The mechanism of dielectric drying of coal, in Proizvodstvo koksa (Coke Production), Moscow: Metallurgiya, 1973, no. 2, pp. 47–51.
5. Gryaznov, N.S., Lazovskii, I.M., and Fel’dbrin, M.R., Coal preparation for coking by preheating and rational grinding, Koks Khim., 1962, no. 11, pp. 10–12.