1. A. E. Sheidegger, Physics of the Flow of Liquids Through Porous Media [in Russian], Moscow (1960).
2. M. A. Gol'dshtik, Transport Processes in a Granular Bed [in Russian], Novosibirsk (1984).
3. Yu. A. Buyevich and A. I. Leonov, Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 6, 167?175 (1967).
4. Yu. A. Buyevich, A. I. Leonov, and V. M. Safrai, J. Fluid Mech.,37, Pt. 2, 371?381 (1969).
5. Yu. A. Buyevich, Chem. Eng. Sci.,27, No. 10, 1699?1708 (1972).