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3. K. Hutter and K. R. Rajagopal, “In Flows of Granular Materials,” Contin. Mech. Thermodyn. 6, 81–139 (1994).
4. S. Savage and D. Jeffrey, “Stress Tensor in Granular Flow at High Shear Rates,” in The Mechanics of Granular Media. Theory of Rapid Motions (Mir, Moscow, 1985), pp. 147–170 [Russian translation].
5. A. V. Shvab and M. S. Martsenko, “Model of Motion of a Highly Concentrated Granular Medium,” Vestnik. Tomsk. Gos. Univ. Mat. Mekh., No. 3, 108–116 (2011).