1. V. V. Rachinskii, Introduction to the General Theory of Sorption Dynamics and Chromatography [in Russian], Nauka, Moscow (1964), p. 135.
2. S. Iwai and J. Inoue, ?A method for estimation of groundwater stratification,? in: Radioisotopes in Hydrology, Proc. Sympos. Tokyo, 1963, IAEA, Vienna (1963).
3. Yu. A. Izraél', Peaceful Nuclear Explosions and the Environment [in Russian], Gidrometeoizdat, Leningrad (1974), p. 135.
4. O. L. Kedrovskii, ?Use of underground nuclear explosions in industry,? in: Peaceful Nuclear Explosions. Proc. of Pannel Vienna. ? IAEA, PL-388/20, 2?6 March (1970).
5. É. V. Sokolovskii, Use of Radioactive Isotopes in Control Measurements During Exploitation of Oil Deposits [in Russian], Nedra, Moscow (1968), p. 180.