1. G. V. Kukolev and A. T. Zelenskaya, Ogneupory, No. 10, 735 (1935).
2. N. P. Shchelkunov and Z. S. Komissarova, Ogneupory, No. 2, 112 (1937); No. 3, 231 (1937).
3. F. I. Azimov, Trudy Moscow Institute of Chemical Engineering, Mashgiz,24, 78, 85 (1962).
4. I. P. Tartakovskii, Avtomatika Priborostroenie, No. 3, 80 (1965).
5. I. G. Shatalova et al., Physicochemical Principles for Vibration Compaction of Powdered Materials [in Russian], Nauka (1965).