1. G. M. Lyakhov, “Wave Equation in Multicomponent Media,” Izv. Akad. Nauk SSSR. Mekh. Mashinostr., No. 1, 46–49 (1959).
2. Kh. A. Rakhmatulin, “Wave Propagation in Multicomponent Media,” Prikl. Mat. Mekh. 33, 598–601 (1969).
3. V. V. Fisenko, Coolant Compressibility and the Efficiency of Circulation Loops in a Nuclear Power Plant (Energoatomizdat, Moscow, 1987) [in Russian].
4. R. I. Nigmatulin, Dynamics of Multiphase Medium (Nauka, Moscow, 1987) [in Russian].
5. V. S. Surov, “One-Velocity Model of a Heterogeneous Medium,” Mat. Model. 13(10), 27–42 (2001).