1. N. N. Varygin and I. G. Martyushin, Khim. Mashinostr.,5, No. 5 (1969).
2. A. P. Baskakov, Velocity of Non-Oxidizing Heating and Thermal Treatment in Fluidized Beds [in Russian], Metallurgiya, Moscow (1968).
3. S. S. Zabrodskii, Hydrodynamics and Heat Transfer in Fluidized Layer [in Russian], GÉI (1963).
4. N. I. Gel'perin, V. G. Ainshtein, and V. B. Kvasha, Fluidization Principles [in Russian], Khimiya, Moscow (1967).
5. V. D. Goroshko, R. B. Rozenbaum, and O. M. Todes, Izv. Vuzov, Neft' i Gaz, 1, pp. 125 (1958).