1. L. R. Gavrilov, Content of Free Gas in Liquids and Methods of Measurement, in Physical Principles of Ultrasound Technology, edited by L. D. Rosenberg [in Russian] (Nauka, Moscow, 1970), pp. 395–426.
2. V. K. Makarov and N. V. Chulkova, Akust. Zh. 35, 175 (1989) [Sov. Phys. Acoust. 35, 108 (1989)].
3. N. F. Bunkin, A. V. Lobeev, O. I. Vinogradova, T. G. Movchan, and A. I. Kuklin, JETP Lett. 62, 685 (1995).
4. A. Abragam, The Principles of Nuclear Magnetism (Clarendon Press, Oxford, 1961) [Russ. transl. IL, Moscow, 1963].
5. H. J. Carr and E. M. Purcell, Phys. Rev. 94, 630 (1954).