1. R. Roy, J.F. Davidson, and V.G. Tuponogov, The velocity of sound in fluidized beds, Chem. Engng. Sci., 1990, Vol. 45, No. 1, P. 323–324.
2. J. van der Schaaf, J.C. Schouten, and C.M. van den Bleek, Origin, propagation and attenuation of pressure waves in gas-solid fluidized beds, Powder Technology, 1998, Vol. 95, P. 220–233.
3. A.F. Ryzkov, V.G. Tuponogov, and B.A. Putrik, Fluctuations and waves in powder and granular fluidized beds, in: Proc. III Europ. Conf. on Fluidization, Toulouse, France, May, 2000, P. 153–163.
4. A.P. Baskakov, V.G. Tuponogov, and N.F. Philippovsky, A study of pressure fluctuations in a bubbling fluidized bed, Powder Technolgy, 1986, Vol. 45, No. 2, P. 113–117.
5. W. Zhang, F. Johnsson, and B. Lecner, Time-dependent behavior of particle flow in CFD boilers, in: Proc. Tenth Engng. Found. Conf. on Fluidization, Beijing, China, May 20–25, 2001, P. 253–260.