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2. M. Muskat, Physical Principles of Oil Production [Russian translation], Gostoptekizdat, Moscow (1953).
3. R. Collins, Flow of Fluids through Porous Materials [Russian translation], Mir, Moscow (1964).
4. I. A. Charnyi, Underground Hydrogasdynamics [in Russian], Gostoptekhizdat, Moscow (1963).
5. D. A. Éfros, Studies on the Filtration of Nonhomogeneous Systems [in Russian], Gostoptekhizdat, Leningrad (1963).