1. Khrenkova, T.M., Mekhanokhimicheskaya aktivatsiya uglei (Mechanochemical Activation of Coals), Moscow: Nedra, 1993.
2. Khrenkova, T.M., Zimina, E.S., Sekrieru, V.I., Krichko, I.B., and Goldenko, N.L., Sb. Tr. IGI, Moscow: Izd. IOTT, 1980, p. 6.
3. Smutkina, Z.S., Sekrieru, V.I., Krichko, I.B., and Skripchenko, G.B., Khim. Tverd. Topl. (Moscow), 1983, no. 1, p. 37.
4. Rustamov, V.R., Kurbanov, M.A., and Dzantiev, B.G., Khim. Tverd. Topl. (Moscow), 1982, no. 3, p. 114.
5. Friedel, R.A. and Berger, J.A., Science, 1959, vol. 130, p. 1762.